Draggable region support for frameless app window on CrOS.

ui/aura/window.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 UI_AURA_WINDOW_H_
 #define UI_AURA_WINDOW_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 264 matching lines @@
 
   // Returns true if the mouse pointer at relative-to-this-Window's-origin
   // |local_point| can trigger an event for this Window.
   // TODO(beng): A Window can supply a hit-test mask to cause some portions of
   // itself to not trigger events, causing the events to fall through to the
   // Window behind.
   bool HitTest(const gfx::Point& local_point);
 
   // Returns the Window that most closely encloses |local_point| for the
   // purposes of event targeting.
-  Window* GetEventHandlerForPoint(const gfx::Point& local_point);
+  Window* GetEventHandlerForPoint(const gfx::Point& local_point,
+                                  ui::EventType event_type);
 
   // Returns the topmost Window with a delegate containing |local_point|.
   Window* GetTopWindowContainingPoint(const gfx::Point& local_point);
 
   // Returns this window's toplevel window (the highest-up-the-tree anscestor
   // that has a delegate set).  The toplevel window may be |this|.
   Window* GetToplevelWindow();
 
   // Claims or relinquishes the claim to focus.
   void Focus();
@@ skipping 78 matching lines @@
   // Updates the visible state of the layer, but does not make visible-state
   // specific changes. Called from Show()/Hide().
   void SetVisible(bool visible);
 
   // Schedules a paint for the Window's entire bounds.
   void SchedulePaint();
 
   // Gets a Window (either this one or a subwindow) containing |local_point|.
   // If |return_tightest| is true, returns the tightest-containing (i.e.
   // furthest down the hierarchy) Window containing the point; otherwise,
-  // returns the loosest.  If |for_event_handling| is true, then hit-test masks
-  // are honored; otherwise, only bounds checks are performed.
+  // returns the loosest.  If |event_type| is provided (!ET_UNKNOWN), then
+  // hit-test masks are honored; otherwise, only bounds checks are performed.
   Window* GetWindowForPoint(const gfx::Point& local_point,
                             bool return_tightest,
-                            bool for_event_handling);
+                            ui::EventType event_type);
 
   // Implementation of RemoveChild(). If |child| is being removed as the result
   // of an add, |new_parent| is the new parent |child| is going to be parented
   // to.
   void RemoveChildImpl(Window* child, Window* new_parent);
 
   // Called when this window's parent has changed.
   void OnParentChanged();
 
   // Determines the real location for stacking |child| and invokes
@@ skipping 94 matching lines @@
   };
 
   std::map<const void*, Value> prop_map_;
 
   DISALLOW_COPY_AND_ASSIGN(Window);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_WINDOW_H_