[Android] Supporting floating select ActionModes for web content

android_webview/java/src/org/chromium/android_webview/AwContentsClient.java

 // Copyright 2012 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.android_webview;
 
 import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.content.ActivityNotFoundException;
 import android.content.Context;
@@ skipping 355 matching lines @@
     //
     public abstract void onFindResultReceived(int activeMatchOrdinal, int numberOfMatches,
             boolean isDoneCounting);
 
     /**
      * Called whenever there is a new content picture available.
      * @param picture New picture.
      */
     public abstract void onNewPicture(Picture picture);
 
-    public abstract WebActionMode startActionMode(
-            View view, ActionHandler actionHandler, boolean floating);
+    /**
+     * TODO(jdduke): Remove when all embedders have been updated.
+     */
+    public WebActionMode startActionMode(View view, ActionHandler actionHandler, boolean floating) {
+        return null;
+    }
 
-    public abstract boolean supportsFloatingActionMode();
+    /**
+     * TODO(jdduke): Remove when all embedders have been updated.
+     */
+    public boolean supportsFloatingActionMode() {
+        return false;
+    }
 
     public void updateTitle(String title, boolean forceNotification) {
         if (!forceNotification && TextUtils.equals(mTitle, title)) return;
         mTitle = title;
         mCallbackHelper.postOnReceivedTitle(mTitle);
     }
 }