diff --git a/android/java/org/chromium/chrome/browser/compositor/layouts/BraveToolbarSwipeLayout.java b/android/java/org/chromium/chrome/browser/compositor/layouts/BraveToolbarSwipeLayout.java
index 7a731156ef0..85fc4bca0be 100644
--- a/android/java/org/chromium/chrome/browser/compositor/layouts/BraveToolbarSwipeLayout.java
+++ b/android/java/org/chromium/chrome/browser/compositor/layouts/BraveToolbarSwipeLayout.java
@@ -8,7 +8,7 @@ package org.chromium.chrome.browser.compositor.layouts;
 import android.content.Context;
 import android.view.ViewGroup;
 
-import org.chromium.base.supplier.MonotonicObservableSupplier;
+import org.chromium.base.supplier.NonNullObservableSupplier;
 import org.chromium.chrome.browser.browser_controls.BrowserControlsStateProvider;
 import org.chromium.chrome.browser.layouts.LayoutManager;
 import org.chromium.chrome.browser.theme.TopUiThemeColorProvider;
@@ -29,7 +29,7 @@ public class BraveToolbarSwipeLayout extends ToolbarSwipeLayout {
             BrowserControlsStateProvider browserControlsStateProvider,
             LayoutManager layoutManager,
             TopUiThemeColorProvider topUiColorProvider,
-            MonotonicObservableSupplier<Integer> bottomControlsOffsetSupplier,
+            NonNullObservableSupplier<Integer> bottomControlsOffsetSupplier,
             ViewGroup contentContainer) {
         super(
                 context,
diff --git a/android/java/org/chromium/chrome/browser/omnibox/BraveLocationBarMediator.java b/android/java/org/chromium/chrome/browser/omnibox/BraveLocationBarMediator.java
index 0645c6cad9f..dd02241f0a6 100644
--- a/android/java/org/chromium/chrome/browser/omnibox/BraveLocationBarMediator.java
+++ b/android/java/org/chromium/chrome/browser/omnibox/BraveLocationBarMediator.java
@@ -16,7 +16,7 @@ import androidx.appcompat.app.AppCompatActivity;
 
 import org.chromium.base.supplier.MonotonicObservableSupplier;
 import org.chromium.base.supplier.OneshotSupplier;
-import org.chromium.base.supplier.SettableMonotonicObservableSupplier;
+import org.chromium.base.supplier.SettableNonNullObservableSupplier;
 import org.chromium.build.annotations.NullMarked;
 import org.chromium.build.annotations.Nullable;
 import org.chromium.chrome.browser.browser_controls.BrowserControlsStateProvider;
@@ -79,7 +79,7 @@ public class BraveLocationBarMediator extends LocationBarMediator {
             MonotonicObservableSupplier<TabModelSelector> tabModelSelectorSupplier,
             @Nullable BrowserControlsStateProvider browserControlsStateProvider,
             Supplier<@Nullable ModalDialogManager> modalDialogManagerSupplier,
-            SettableMonotonicObservableSupplier<@AutocompleteRequestType Integer>
+            SettableNonNullObservableSupplier<@AutocompleteRequestType Integer>
                     autocompleteRequestTypeSupplier,
             @Nullable PageZoomIndicatorCoordinator pageZoomIndicatorCoordinator,
             FuseboxCoordinator fuseboxCoordinator,
diff --git a/android/java/org/chromium/chrome/browser/tabbed_mode/BraveTabbedRootUiCoordinator.java b/android/java/org/chromium/chrome/browser/tabbed_mode/BraveTabbedRootUiCoordinator.java
index b6c363a5b40..12356cae77a 100644
--- a/android/java/org/chromium/chrome/browser/tabbed_mode/BraveTabbedRootUiCoordinator.java
+++ b/android/java/org/chromium/chrome/browser/tabbed_mode/BraveTabbedRootUiCoordinator.java
@@ -15,6 +15,7 @@ import androidx.appcompat.app.AppCompatActivity;
 
 import org.chromium.base.Callback;
 import org.chromium.base.supplier.MonotonicObservableSupplier;
+import org.chromium.base.supplier.NonNullObservableSupplier;
 import org.chromium.base.supplier.OneshotSupplier;
 import org.chromium.base.supplier.OneshotSupplierImpl;
 import org.chromium.base.supplier.SettableMonotonicObservableSupplier;
@@ -123,7 +124,7 @@ public class BraveTabbedRootUiCoordinator extends TabbedRootUiCoordinator {
             @Nullable Bundle savedInstanceState,
             @Nullable PersistableBundle persistentState,
             @Nullable MultiInstanceManager multiInstanceManager,
-            @NonNull MonotonicObservableSupplier<Integer> overviewColorSupplier,
+            @NonNull NonNullObservableSupplier<Integer> overviewColorSupplier,
             @NonNull
                     MonotonicObservableSupplier<ManualFillingComponent>
                             manualFillingComponentSupplier,
diff --git a/android/java/org/chromium/chrome/browser/toolbar/BraveToolbarManager.java b/android/java/org/chromium/chrome/browser/toolbar/BraveToolbarManager.java
index 7ca496d8d92..cd7c1c89d34 100644
--- a/android/java/org/chromium/chrome/browser/toolbar/BraveToolbarManager.java
+++ b/android/java/org/chromium/chrome/browser/toolbar/BraveToolbarManager.java
@@ -452,7 +452,7 @@ public class BraveToolbarManager extends ToolbarManager
             @Nullable OnClickListener bookmarkClickHandler,
             @Nullable OnClickListener customTabsBackClickHandler,
             @Nullable NonNullObservableSupplier<Integer> archivedTabCountSupplier,
-            MonotonicObservableSupplier<TabModelDotInfo> tabModelNotificationDotSupplier,
+            NonNullObservableSupplier<TabModelDotInfo> tabModelNotificationDotSupplier,
             @Nullable UndoBarThrottle undoBarThrottle) {
 
         super.initializeWithNative(
diff --git a/android/java/org/chromium/chrome/browser/toolbar/bottom/BraveBottomControlsCoordinator.java b/android/java/org/chromium/chrome/browser/toolbar/bottom/BraveBottomControlsCoordinator.java
index 0c7775900dd..84210e366c3 100644
--- a/android/java/org/chromium/chrome/browser/toolbar/bottom/BraveBottomControlsCoordinator.java
+++ b/android/java/org/chromium/chrome/browser/toolbar/bottom/BraveBottomControlsCoordinator.java
@@ -14,6 +14,7 @@ import androidx.annotation.Nullable;
 
 import org.chromium.base.Callback;
 import org.chromium.base.supplier.MonotonicObservableSupplier;
+import org.chromium.base.supplier.NonNullObservableSupplier;
 import org.chromium.base.supplier.NullableObservableSupplier;
 import org.chromium.base.supplier.ObservableSupplierImpl;
 import org.chromium.base.supplier.OneshotSupplier;
@@ -77,7 +78,7 @@ public class BraveBottomControlsCoordinator extends BottomControlsCoordinator {
             ScrollingBottomViewResourceFrameLayout root,
             OneshotSupplier<BottomControlsContentDelegate> contentDelegateSupplier,
             TabObscuringHandler tabObscuringHandler,
-            MonotonicObservableSupplier<Boolean> overlayPanelVisibilitySupplier,
+            NonNullObservableSupplier<Boolean> overlayPanelVisibilitySupplier,
             NullableObservableSupplier<@BrowserControlsState Integer> constraintsSupplier,
             Supplier<Boolean> readAloudRestoringSupplier) {
         super(
diff --git a/android/java/org/chromium/chrome/browser/toolbar/top/BraveTopToolbarCoordinator.java b/android/java/org/chromium/chrome/browser/toolbar/top/BraveTopToolbarCoordinator.java
index 8eec360d467..9b66945cdec 100644
--- a/android/java/org/chromium/chrome/browser/toolbar/top/BraveTopToolbarCoordinator.java
+++ b/android/java/org/chromium/chrome/browser/toolbar/top/BraveTopToolbarCoordinator.java
@@ -13,6 +13,7 @@ import androidx.annotation.ColorInt;
 
 import org.chromium.base.BraveReflectionUtil;
 import org.chromium.base.supplier.MonotonicObservableSupplier;
+import org.chromium.base.supplier.NonNullObservableSupplier;
 import org.chromium.base.supplier.NullableObservableSupplier;
 import org.chromium.base.supplier.OneshotSupplier;
 import org.chromium.build.annotations.Nullable;
@@ -73,13 +74,13 @@ public class BraveTopToolbarCoordinator extends TopToolbarCoordinator {
             MonotonicObservableSupplier<AppMenuButtonHelper> appMenuButtonHelperSupplier,
             @Nullable ToggleTabStackButtonCoordinator tabSwitcherButtonCoordinator,
             MonotonicObservableSupplier<Integer> tabCountSupplier,
-            MonotonicObservableSupplier<Boolean> homepageEnabledSupplier,
-            MonotonicObservableSupplier<Boolean> homepageNonNtpSupplier,
+            NonNullObservableSupplier<Boolean> homepageEnabledSupplier,
+            NonNullObservableSupplier<Boolean> homepageNonNtpSupplier,
             Supplier<ResourceManager> resourceManagerSupplier,
             HistoryDelegate historyDelegate,
             boolean initializeWithIncognitoColors,
             NullableObservableSupplier<@BrowserControlsState Integer> constraintsSupplier,
-            MonotonicObservableSupplier<Boolean> compositorInMotionSupplier,
+            NonNullObservableSupplier<Boolean> compositorInMotionSupplier,
             BrowserStateBrowserControlsVisibilityDelegate
                     browserStateBrowserControlsVisibilityDelegate,
             FullscreenManager fullscreenManager,
@@ -90,7 +91,7 @@ public class BraveTopToolbarCoordinator extends TopToolbarCoordinator {
             @Nullable OnLongClickListener onLongClickListener,
             ToolbarProgressBar progressBar,
             NullableObservableSupplier<Tab> tabSupplier,
-            MonotonicObservableSupplier<Boolean> toolbarNavControlsEnabledSupplier,
+            NonNullObservableSupplier<Boolean> toolbarNavControlsEnabledSupplier,
             @Nullable BackButtonCoordinator backButtonCoordinator,
             @Nullable ForwardButtonCoordinator forwardButtonCoordinator,
             @Nullable HomeButtonDisplay homeButtonDisplay,
diff --git a/android/javatests/org/chromium/chrome/browser/BytecodeTest.java b/android/javatests/org/chromium/chrome/browser/BytecodeTest.java
index 4e3bc831868..6f4ce4b7446 100644
--- a/android/javatests/org/chromium/chrome/browser/BytecodeTest.java
+++ b/android/javatests/org/chromium/chrome/browser/BytecodeTest.java
@@ -1478,7 +1478,7 @@ public class BytecodeTest {
                         TabObscuringHandler.class,
                         int.class,
                         int.class,
-                        MonotonicObservableSupplier.class,
+                        NonNullObservableSupplier.class,
                         MonotonicObservableSupplier.class,
                         Supplier.class));
         Assert.assertTrue(
@@ -1571,13 +1571,13 @@ public class BytecodeTest {
                         MonotonicObservableSupplier.class,
                         ToggleTabStackButtonCoordinator.class,
                         MonotonicObservableSupplier.class,
-                        MonotonicObservableSupplier.class,
-                        MonotonicObservableSupplier.class,
+                        NonNullObservableSupplier.class,
+                        NonNullObservableSupplier.class,
                         Supplier.class,
                         HistoryDelegate.class,
                         boolean.class,
                         NullableObservableSupplier.class,
-                        MonotonicObservableSupplier.class,
+                        NonNullObservableSupplier.class,
                         BrowserStateBrowserControlsVisibilityDelegate.class,
                         FullscreenManager.class,
                         TabObscuringHandler.class,
@@ -1587,7 +1587,7 @@ public class BytecodeTest {
                         OnLongClickListener.class,
                         ToolbarProgressBar.class,
                         NullableObservableSupplier.class,
-                        MonotonicObservableSupplier.class,
+                        NonNullObservableSupplier.class,
                         BackButtonCoordinator.class,
                         ForwardButtonCoordinator.class,
                         HomeButtonDisplay.class,
@@ -1783,7 +1783,7 @@ public class BytecodeTest {
                         MonotonicObservableSupplier.class,
                         BrowserControlsStateProvider.class,
                         Supplier.class,
-                        SettableMonotonicObservableSupplier.class,
+                        SettableNonNullObservableSupplier.class,
                         PageZoomIndicatorCoordinator.class,
                         FuseboxCoordinator.class,
                         MultiInstanceManager.class,
@@ -1898,7 +1898,7 @@ public class BytecodeTest {
                         Bundle.class,
                         PersistableBundle.class,
                         MultiInstanceManager.class,
-                        MonotonicObservableSupplier.class,
+                        NonNullObservableSupplier.class,
                         MonotonicObservableSupplier.class,
                         EdgeToEdgeManager.class,
                         MonotonicObservableSupplier.class,
@@ -2085,7 +2085,7 @@ public class BytecodeTest {
                         BrowserControlsStateProvider.class,
                         LayoutManager.class,
                         TopUiThemeColorProvider.class,
-                        MonotonicObservableSupplier.class,
+                        NonNullObservableSupplier.class,
                         ViewGroup.class));
         Assert.assertTrue(
                 constructorsMatch(
diff --git a/browser/ui/android/toolbar/java/src/org/chromium/chrome/browser/toolbar/bottom/BraveBottomControlsMediator.java b/browser/ui/android/toolbar/java/src/org/chromium/chrome/browser/toolbar/bottom/BraveBottomControlsMediator.java
index 8819d3fdee2..0d0da774806 100644
--- a/browser/ui/android/toolbar/java/src/org/chromium/chrome/browser/toolbar/bottom/BraveBottomControlsMediator.java
+++ b/browser/ui/android/toolbar/java/src/org/chromium/chrome/browser/toolbar/bottom/BraveBottomControlsMediator.java
@@ -6,6 +6,7 @@
 package org.chromium.chrome.browser.toolbar.bottom;
 
 import org.chromium.base.supplier.MonotonicObservableSupplier;
+import org.chromium.base.supplier.NonNullObservableSupplier;
 import org.chromium.base.supplier.ObservableSupplierImpl;
 import org.chromium.chrome.browser.browser_controls.BottomControlsStacker;
 import org.chromium.chrome.browser.browser_controls.BrowserStateBrowserControlsVisibilityDelegate;
@@ -39,7 +40,7 @@ class BraveBottomControlsMediator extends BottomControlsMediator {
             TabObscuringHandler tabObscuringHandler,
             int bottomControlsHeight,
             int bottomControlsShadowHeight,
-            MonotonicObservableSupplier<Boolean> overlayPanelVisibilitySupplier,
+            NonNullObservableSupplier<Boolean> overlayPanelVisibilitySupplier,
             MonotonicObservableSupplier<EdgeToEdgeController> edgeToEdgeControllerSupplier,
             Supplier<Boolean> readAloudRestoringSupplier) {
         super(