[Home] Disable home button

chrome/android/java/src/org/chromium/chrome/browser/toolbar/BottomToolbarPhone.java

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser.toolbar;
 
 import android.content.Context;
 import android.graphics.Canvas;
 import android.graphics.Rect;
 import android.graphics.drawable.Drawable;
@@ skipping 296 matching lines @@
         }
 
         super.updateToolbarBackground(visualState);
     }
 
     @Override
     protected boolean shouldHideEndToolbarButtons() {
         return mShouldHideEndToolbarButtons;
     }
 
+    @Override
+    protected void onHomeButtonUpdate(boolean homeButtonEnabled) {
+        // Intentionally does not call super. Chrome Home does not support a home button.
+    }
+
     /**
      * Sets the height and title text appearance of the provided toolbar so that its style is
      * consistent with BottomToolbarPhone.
      * @param otherToolbar The other {@link Toolbar} to style.
      */
     public void setOtherToolbarStyle(Toolbar otherToolbar) {
         // Android's Toolbar class typically changes its height based on device orientation.
         // BottomToolbarPhone has a fixed height. Update |toolbar| to match.
         otherToolbar.getLayoutParams().height = getHeight();
 
         // Android Toolbar action buttons are aligned based on the minimum height.
         int extraTopMargin = getExtraTopMargin();
         otherToolbar.setMinimumHeight(getHeight() - extraTopMargin);
 
         otherToolbar.setTitleTextAppearance(
                 otherToolbar.getContext(), R.style.BottomSheetContentTitle);
         ApiCompatibilityUtils.setPaddingRelative(otherToolbar,
                 ApiCompatibilityUtils.getPaddingStart(otherToolbar),
                 otherToolbar.getPaddingTop() + extraTopMargin,
                 ApiCompatibilityUtils.getPaddingEnd(otherToolbar), otherToolbar.getPaddingBottom());
 
         otherToolbar.requestLayout();
     }
 }