[Android] Select text when stylus first button is pressed.

content/browser/renderer_host/render_widget_host_view_android.h

 // Copyright (c) 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_
 
 #include <map>
 #include <queue>
 
@@ skipping 211 matching lines @@
   void SynchronousFrameMetadata(
       const cc::CompositorFrameMetadata& frame_metadata);
 
   void SetOverlayVideoMode(bool enabled);
 
   typedef base::Callback<
       void(const base::string16& content, int start_offset, int end_offset)>
       TextSurroundingSelectionCallback;
   void SetTextSurroundingSelectionCallback(
       const TextSurroundingSelectionCallback& callback);
+  bool ShouldTriggerOrUntriggerTextSelection(const ui::MotionEvent& event);
+  bool IsGestureTextSelectionTriggered() const;
 
  private:
   void RunAckCallbacks();
 
   void DestroyDelegatedContent();
   void SwapDelegatedFrame(uint32 output_surface_id,
                           scoped_ptr<cc::DelegatedFrameData> frame_data);
   void SendDelegatedFrameAck(uint32 output_surface_id);
   void SendReturnedDelegatedResources(uint32 output_surface_id);
 
@@ skipping 110 matching lines @@
     LastFrameInfo(uint32 output_id,
                   scoped_ptr<cc::CompositorFrame> output_frame);
     ~LastFrameInfo();
     uint32 output_surface_id;
     scoped_ptr<cc::CompositorFrame> frame;
   };
 
   scoped_ptr<LastFrameInfo> last_frame_info_;
 
   TextSurroundingSelectionCallback text_surrounding_selection_callback_;
+  bool gesture_text_selection_triggered_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAndroid);
 };
 
 } // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_