Use platform slop/timeout values for selection handle tap detection

content/browser/renderer_host/input/touch_handle.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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_HANDLE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_HANDLE_H_
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
@@ skipping 31 matching lines @@
 class CONTENT_EXPORT TouchHandleClient {
  public:
   virtual ~TouchHandleClient() {}
   virtual void OnHandleDragBegin(const TouchHandle& handle) = 0;
   virtual void OnHandleDragUpdate(const TouchHandle& handle,
                                   const gfx::PointF& new_position) = 0;
   virtual void OnHandleDragEnd(const TouchHandle& handle) = 0;
   virtual void OnHandleTapped(const TouchHandle& handle) = 0;
   virtual void SetNeedsAnimate() = 0;
   virtual scoped_ptr<TouchHandleDrawable> CreateDrawable() = 0;
+  virtual base::TimeDelta GetTapTimeout() const = 0;
+  virtual float GetTapSlop() const = 0;
 };
 
 // Responsible for displaying a selection or insertion handle for text
 // interaction.
 class CONTENT_EXPORT TouchHandle {
  public:
   // The drawable will be enabled but invisible until otherwise specified.
   TouchHandle(TouchHandleClient* client, TouchHandleOrientation orientation);
   ~TouchHandle();
 
@@ skipping 54 matching lines @@
   // may not reflect the actual visibilty and position of the drawable. This
   // discrepancy is resolved either upon fade completion or cancellation.
   base::TimeTicks fade_end_time_;
   gfx::PointF fade_start_position_;
   float alpha_;
   bool animate_deferred_fade_;
 
   bool enabled_;
   bool is_visible_;
   bool is_dragging_;
+  bool is_drag_within_tap_region_;
 
   DISALLOW_COPY_AND_ASSIGN(TouchHandle);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_HANDLE_H_