[Android] Method clobberCurrentTabWithFallbackUrl was removed from ExternalNavigationHandler

Chromium change:

https://chromium.googlesource.com/chromium/src/+/37b5b744bc83f630d3121b46868818bb4e848c2a

Don't launch external fallback URLs when not allowed to launch external URLs

Ensure that we don't launch external fallback URLs, when we've otherwise
decided that we should not launch an external navigation (even if it was
possible to). Also prevent auto subframe navigation from launching
external fallback URLs.

Bug: 1094442

android/java/org/chromium/chrome/browser/externalnav/BraveExternalNavigationHandler.java

@@ -37,13 +37,18 @@ public class BraveExternalNavigationHandler extends ExternalNavigationHandler {
         mBraveUphold.CompleteUpholdVerification(params, this);
     }
 
-    /**
-     * This function will be removed by ASM byte-code patching tool
-     * and redirected to ExternalNavigationHandler.
-     */
     public @OverrideUrlLoadingResult int clobberCurrentTabWithFallbackUrl(
         String browserFallbackUrl, ExternalNavigationParams params) {
-        assert false;
-        return OverrideUrlLoadingResult.OVERRIDE_WITH_CLOBBERING_TAB;
+        // Below is an actual code that was used prior to deletion of
+        // clobberCurrentTabWithFallbackUrl introduced here
+        // https://chromium.googlesource.com/chromium/src/+/37b5b744bc83f630d3121b46868818bb4e848c2a
+        if (!params.isMainFrame()) {
+            return OverrideUrlLoadingResult.NO_OVERRIDE;
+        }
+
+        if (params.getRedirectHandler() != null) {
+            params.getRedirectHandler().setShouldNotOverrideUrlLoadingOnCurrentRedirectChain();
+        }
+        return clobberCurrentTab(browserFallbackUrl, params.getReferrerUrl());
     }
 }