Upstream oodles of Chrome for Android code into Chromium.

chrome/android/java_staging/src/org/chromium/chrome/browser/toolbar/HomePageButton.java

Index: chrome/android/java_staging/src/org/chromium/chrome/browser/toolbar/HomePageButton.java
diff --git a/chrome/android/java_staging/src/org/chromium/chrome/browser/toolbar/HomePageButton.java b/chrome/android/java_staging/src/org/chromium/chrome/browser/toolbar/HomePageButton.java
new file mode 100644
index 0000000000000000000000000000000000000000..cdca6badb4a64b80e4b728863e3573a29beec55b
--- /dev/null
+++ b/chrome/android/java_staging/src/org/chromium/chrome/browser/toolbar/HomePageButton.java
@@ -0,0 +1,47 @@
+// Copyright 2015 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.util.AttributeSet;
+import android.view.ContextMenu;
+import android.view.ContextMenu.ContextMenuInfo;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.View.OnCreateContextMenuListener;
+
+import com.google.android.apps.chrome.R;
+
+import org.chromium.chrome.browser.partnercustomizations.HomepageManager;
+import org.chromium.chrome.browser.widget.TintedImageButton;
+
+/**
+ * View that displays the home page button.
+ */
+public class HomePageButton extends TintedImageButton
+        implements OnCreateContextMenuListener, MenuItem.OnMenuItemClickListener {
+
+    private static final int ID_REMOVE = 0;
+
+    /** Constructor inflating from XML. */
+    public HomePageButton(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        setOnCreateContextMenuListener(this);
+    }
+
+    @Override
+    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
+        menu.add(Menu.NONE, ID_REMOVE, Menu.NONE, R.string.remove)
+                .setOnMenuItemClickListener(this);
+    }
+
+    @Override
+    public boolean onMenuItemClick(MenuItem item) {
+        assert item.getItemId() == ID_REMOVE;
+        HomepageManager.getInstance(getContext()).setPrefHomepageEnabled(false);
+        return true;
+    }
+}