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

ui/events/gesture_detection/mock_motion_event.cc

 // 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 "ui/events/gesture_detection/mock_motion_event.h"
 
 #include "base/logging.h"
 
 using base::TimeTicks;
 
@@ skipping 122 matching lines @@
 float MockMotionEvent::GetHistoricalX(size_t pointer_index,
                                       size_t historical_index) const {
   return 0;
 }
 
 float MockMotionEvent::GetHistoricalY(size_t pointer_index,
                                       size_t historical_index) const {
   return 0;
 }
 
+bool MockMotionEvent::ShouldConvertToMouseEvent() const {
+  return false;
+}
+
 scoped_ptr<MotionEvent> MockMotionEvent::Clone() const {
   return scoped_ptr<MotionEvent>(new MockMotionEvent(*this));
 }
 
 scoped_ptr<MotionEvent> MockMotionEvent::Cancel() const {
   scoped_ptr<MockMotionEvent> cancel_event(new MockMotionEvent(*this));
   cancel_event->action = MotionEvent::ACTION_CANCEL;
   return cancel_event.PassAs<MotionEvent>();
 }
 
@@ skipping 37 matching lines @@
   if (pointer_count > 1)
     --pointer_count;
   action = ACTION_CANCEL;
 }
 
 void MockMotionEvent::SetTouchMajor(float new_touch_major) {
   touch_major = new_touch_major;
 }
 
 }  // namespace ui