[Android] Allow custom ActionMode creation via ContentViewClient

ui/touch_selection/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 UI_TOUCH_SELECTION_TOUCH_HANDLE_H_
 #define UI_TOUCH_SELECTION_TOUCH_HANDLE_H_
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
@@ skipping 66 matching lines @@
   void SetOrientation(TouchHandleOrientation orientation);
 
   // Allows touch-dragging of the handle. Returns true if the event was
   // consumed, in which case the caller should cease further handling.
   bool WillHandleTouchEvent(const MotionEvent& event);
 
   // Ticks an active animation, as requested to the client by |SetNeedsAnimate|.
   // Returns true if an animation is active and requires further ticking.
   bool Animate(base::TimeTicks frame_time);
 
+  // Get the visible bounds of the handle, based on the current position and
+  // the drawable's size/orientation. If the handle is invisible or disabled,
+  // the bounds will be empty.
+  gfx::RectF GetVisibleBounds() const;
+
   bool is_dragging() const { return is_dragging_; }
   const gfx::PointF& position() const { return position_; }
   TouchHandleOrientation orientation() const { return orientation_; }
 
  private:
   void BeginDrag();
   void EndDrag();
   void BeginFade();
   void EndFade();
   void SetAlpha(float alpha);
@@ skipping 22 matching lines @@
   bool is_visible_;
   bool is_dragging_;
   bool is_drag_within_tap_region_;
 
   DISALLOW_COPY_AND_ASSIGN(TouchHandle);
 };
 
 }  // namespace ui
 
 #endif  // UI_TOUCH_SELECTION_TOUCH_HANDLE_H_