diff --git a/android/java/apk_for_test.flags b/android/java/apk_for_test.flags
index b01da40cada..8e76fa11238 100644
--- a/android/java/apk_for_test.flags
+++ b/android/java/apk_for_test.flags
@@ -913,6 +913,7 @@
     *** mTabController;
     *** mMinimizationManagerHolder;
     *** mCustomTabFeatureOverridesManager;
+    *** getAppHeaderCoordinator(...);
     public <init>(...);
 }
 
diff --git a/android/java/org/chromium/chrome/browser/customtabs/FullScreenCustomTabActivity.java b/android/java/org/chromium/chrome/browser/customtabs/FullScreenCustomTabActivity.java
index 6ad6c7a9d21..b1744ac6dc5 100644
--- a/android/java/org/chromium/chrome/browser/customtabs/FullScreenCustomTabActivity.java
+++ b/android/java/org/chromium/chrome/browser/customtabs/FullScreenCustomTabActivity.java
@@ -36,6 +36,7 @@ import org.chromium.chrome.browser.customtabs.features.toolbar.CustomTabToolbarC
 import org.chromium.chrome.browser.notifications.BravePermissionUtils;
 import org.chromium.chrome.browser.preferences.ChromeSharedPreferences;
 import org.chromium.chrome.browser.ui.RootUiCoordinator;
+import org.chromium.chrome.browser.ui.desktop_windowing.AppHeaderCoordinator;
 import org.chromium.chrome.browser.ui.messages.snackbar.Snackbar;
 import org.chromium.chrome.browser.ui.messages.snackbar.SnackbarManager;
 import org.chromium.chrome.browser.ui.messages.snackbar.SnackbarManager.SnackbarController;
@@ -229,7 +230,13 @@ public class FullScreenCustomTabActivity extends CustomTabActivity {
                         () -> mMinimizationManagerHolder.getMinimizationManager(),
                         () -> mCustomTabFeatureOverridesManager,
                         () -> getCustomTabActivityNavigationController().openCurrentUrlInBrowser(),
-                        getEdgeToEdgeManager());
+                        getEdgeToEdgeManager(),
+                        getAppHeaderCoordinator());
         return mBaseCustomTabRootUiCoordinator;
     }
+
+    private AppHeaderCoordinator getAppHeaderCoordinator() {
+        assert false : "This methos should be overridden via bytecode manipulation!";
+        return null;
+    }
 }
diff --git a/android/java/org/chromium/chrome/browser/customtabs/FullScreenCustomTabRootUiCoordinator.java b/android/java/org/chromium/chrome/browser/customtabs/FullScreenCustomTabRootUiCoordinator.java
index 257c67b5ebd..a5f8b870b89 100644
--- a/android/java/org/chromium/chrome/browser/customtabs/FullScreenCustomTabRootUiCoordinator.java
+++ b/android/java/org/chromium/chrome/browser/customtabs/FullScreenCustomTabRootUiCoordinator.java
@@ -6,6 +6,7 @@
 package org.chromium.chrome.browser.customtabs;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.appcompat.app.AppCompatActivity;
 
 import org.chromium.base.supplier.ObservableSupplier;
@@ -36,6 +37,7 @@ import org.chromium.chrome.browser.ui.appmenu.AppMenuDelegate;
 import org.chromium.chrome.browser.ui.edge_to_edge.EdgeToEdgeController;
 import org.chromium.chrome.browser.ui.messages.snackbar.SnackbarManager;
 import org.chromium.chrome.browser.ui.system.StatusBarColorController.StatusBarColorProvider;
+import org.chromium.components.browser_ui.desktop_windowing.DesktopWindowStateManager;
 import org.chromium.components.browser_ui.edge_to_edge.EdgeToEdgeManager;
 import org.chromium.components.browser_ui.widget.MenuOrKeyboardActionController;
 import org.chromium.ui.base.ActivityWindowAndroid;
@@ -82,7 +84,8 @@ public class FullScreenCustomTabRootUiCoordinator extends BaseCustomTabRootUiCoo
             @NonNull Supplier<CustomTabMinimizeDelegate> minimizeDelegateSupplier,
             @NonNull Supplier<CustomTabFeatureOverridesManager> featureOverridesManagerSupplier,
             @NonNull Runnable openInBrowserRunnable,
-            @NonNull EdgeToEdgeManager edgeToEdgeManager) {
+            @NonNull EdgeToEdgeManager edgeToEdgeManager,
+            @Nullable DesktopWindowStateManager desktopWindowStateManager) {
         super(
                 activity,
                 shareDelegateSupplier,
@@ -119,7 +122,8 @@ public class FullScreenCustomTabRootUiCoordinator extends BaseCustomTabRootUiCoo
                 minimizeDelegateSupplier,
                 featureOverridesManagerSupplier,
                 openInBrowserRunnable,
-                edgeToEdgeManager);
+                edgeToEdgeManager,
+                desktopWindowStateManager);
     }
 
     @Override
diff --git a/android/javatests/org/chromium/chrome/browser/BytecodeTest.java b/android/javatests/org/chromium/chrome/browser/BytecodeTest.java
index b6272fdcb0e..3245b56931b 100644
--- a/android/javatests/org/chromium/chrome/browser/BytecodeTest.java
+++ b/android/javatests/org/chromium/chrome/browser/BytecodeTest.java
@@ -138,6 +138,7 @@ import org.chromium.chrome.browser.toolbar.top.ToolbarControlContainer;
 import org.chromium.chrome.browser.toolbar.top.ToolbarLayout;
 import org.chromium.chrome.browser.ui.appmenu.AppMenuBlocker;
 import org.chromium.chrome.browser.ui.appmenu.AppMenuDelegate;
+import org.chromium.chrome.browser.ui.desktop_windowing.AppHeaderCoordinator;
 import org.chromium.chrome.browser.ui.messages.snackbar.SnackbarManager;
 import org.chromium.chrome.browser.ui.native_page.NativePageHost;
 import org.chromium.chrome.browser.ui.system.StatusBarColorController;
@@ -908,6 +909,12 @@ public class BytecodeTest {
                         void.class,
                         boolean.class,
                         boolean.class));
+        Assert.assertTrue(
+                methodExists(
+                        "org/chromium/chrome/browser/customtabs/BaseCustomTabActivity",
+                        "getAppHeaderCoordinator",
+                        MethodModifier.REGULAR,
+                        AppHeaderCoordinator.class));
     }
 
     @Test
diff --git a/build/android/bytecode/java/org/brave/bytecode/BraveBaseCustomTabActivityClassAdapter.java b/build/android/bytecode/java/org/brave/bytecode/BraveBaseCustomTabActivityClassAdapter.java
index c921c609da0..aa115183b00 100644
--- a/build/android/bytecode/java/org/brave/bytecode/BraveBaseCustomTabActivityClassAdapter.java
+++ b/build/android/bytecode/java/org/brave/bytecode/BraveBaseCustomTabActivityClassAdapter.java
@@ -33,5 +33,8 @@ public class BraveBaseCustomTabActivityClassAdapter extends BraveClassVisitor {
 
         deleteField(sFullScreenCustomTabActivityClassName, "mCustomTabFeatureOverridesManager");
         makeProtectedField(sBaseCustomTabActivityClassName, "mCustomTabFeatureOverridesManager");
+
+        deleteMethod(sFullScreenCustomTabActivityClassName, "getAppHeaderCoordinator");
+        makePublicMethod(sBaseCustomTabActivityClassName, "getAppHeaderCoordinator");
     }
 }