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

ui/events/gesture_detection/mock_motion_event.h

 // Copyright 2014 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.
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/time/time.h"
 #include "ui/events/gesture_detection/motion_event.h"
 #include "ui/gfx/geometry/point_f.h"
@@ skipping 18 matching lines @@
                   float x0,
                   float y0,
                   float x1,
                   float y1,
                   float x2,
                   float y2);
   MockMotionEvent(Action action,
                   base::TimeTicks time,
                   const std::vector<gfx::PointF>& positions);
   MockMotionEvent(const MockMotionEvent& other);
+
   virtual ~MockMotionEvent();
 
   // MotionEvent methods.
   virtual Action GetAction() const OVERRIDE;
   virtual int GetActionIndex() const OVERRIDE;
   virtual size_t GetPointerCount() const OVERRIDE;
   virtual int GetId() const OVERRIDE;
   virtual int GetPointerId(size_t pointer_index) const OVERRIDE;
   virtual float GetX(size_t pointer_index) const OVERRIDE;
   virtual float GetY(size_t pointer_index) const OVERRIDE;
@@ skipping 19 matching lines @@
 
   // Utility methods.
   void SetId(int new_id);
   void SetTime(base::TimeTicks new_time);
   void PressPoint(float x, float y);
   void MovePoint(size_t index, float x, float y);
   void ReleasePoint();
   void CancelPoint();
   void SetTouchMajor(float new_touch_major);
   void SetRawOffset(float raw_offset_x, float raw_offset_y);
+  void SetToolType(size_t index, ToolType tool_type);
+  void SetButtonState(int button_state);
 
   MotionEvent::Action action;
   size_t pointer_count;
   gfx::PointF points[MAX_POINTERS];
+  ToolType tool_types[MAX_POINTERS];
   gfx::Vector2dF raw_offset;
   base::TimeTicks time;
   float touch_major;
   int id;
+  int button_state;
 };
 
 }  // namespace ui