Add a default share button to the menu of Custom Tabs

chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabActivity.java

 // 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.customtabs;
 
 import android.content.Intent;
 import android.graphics.Bitmap;
 import android.net.Uri;
 import android.os.IBinder;
@@ skipping 339 matching lines @@
         mTab.loadUrl(new LoadUrlParams(searchUrl));
     }
 
     @Override
     public SingleTabModelSelector getTabModelSelector() {
         return (SingleTabModelSelector) super.getTabModelSelector();
     }
 
     @Override
     protected AppMenuPropertiesDelegate createAppMenuPropertiesDelegate() {
-        return new CustomTabAppMenuPropertiesDelegate(this, mIntentDataProvider.getMenuTitles());
+        return new CustomTabAppMenuPropertiesDelegate(this, mIntentDataProvider.getMenuTitles(),
+                mIntentDataProvider.shouldShowShareButton());
     }
 
     @Override
     protected int getAppMenuLayoutId() {
         return R.menu.custom_tabs_menu;
     }
 
     @Override
     protected int getControlContainerLayoutId() {
         return R.layout.custom_tabs_control_container;
@@ skipping 64 matching lines @@
     @Override
     protected void showAppMenuForKeyboardEvent() {
         if (!shouldShowAppMenu()) return;
         super.showAppMenuForKeyboardEvent();
     }
 
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         int menuIndex = getAppMenuPropertiesDelegate().getIndexOfMenuItem(item);
         if (menuIndex >= 0) {
-            mIntentDataProvider.clickMenuItemWithUrl(getApplicationContext(), menuIndex,
+            mIntentDataProvider.clickMenuItemWithUrl(this, menuIndex,
                     getTabModelSelector().getCurrentTab().getUrl());
             RecordUserAction.record("CustomTabsMenuCustomMenuItem");
             return true;
         }
         return super.onOptionsItemSelected(item);
     }
 
     @Override
     public boolean dispatchKeyEvent(KeyEvent event) {
         Boolean result = KeyboardShortcuts.dispatchKeyEvent(event, this,
@@ skipping 61 matching lines @@
 
     /**
      * @return The {@link CustomTabIntentDataProvider} for this {@link CustomTabActivity}. For test
      *         purposes only.
      */
     @VisibleForTesting
     CustomTabIntentDataProvider getIntentDataProvider() {
         return mIntentDataProvider;
     }
 }