Add gesture target fuzzing to views

ui/views/view.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_VIEWS_VIEW_H_
 #define UI_VIEWS_VIEW_H_
 
 #include <algorithm>
 #include <map>
 #include <set>
@@ skipping 392 matching lines @@
 
   // Convert a point from the coordinate system of one View to another.
   //
   // |source| and |target| must be in the same widget, but doesn't need to be in
   // the same view hierarchy.
   // |source| can be NULL in which case it means the screen coordinate system.
   static void ConvertPointToView(const View* source,
                                  const View* target,
                                  gfx::Point* point);
 
+  // Convert a rect from the coordinate system of one View to another.
+  //
+  // |source| and |target| must be in the same widget, but doesn't need to be in
+  // the same view hierarchy.
+  // |source| can be NULL in which case it means the screen coordinate system.
+  static void ConvertRectToView(const View* source,
+                                const View* target,
+                                gfx::Rect* rect);
+
   // Convert a point from a View's coordinate system to that of its Widget.
   static void ConvertPointToWidget(const View* src, gfx::Point* point);
 
   // Convert a point from the coordinate system of a View's Widget to that
   // View's coordinate system.
   static void ConvertPointFromWidget(const View* dest, gfx::Point* p);
 
   // Convert a point from a View's coordinate system to that of the screen.
   static void ConvertPointToScreen(const View* src, gfx::Point* point);
 
@@ skipping 70 matching lines @@
 
   // Enable/Disable accelerated compositing.
   static void set_use_acceleration_when_possible(bool use);
   static bool get_use_acceleration_when_possible();
 
   // Input ---------------------------------------------------------------------
   // The points (and mouse locations) in the following functions are in the
   // view's coordinates, except for a RootView.
 
   // Returns the deepest visible descendant that contains the specified point.
+  // Note that if you are overriding GetEventHandlerForPoint, you will likely
+  // also want to override GetEventHandlerForRect.
   virtual View* GetEventHandlerForPoint(const gfx::Point& point);
 
+  // Considers the bounding rectangles of all leaf descendant views that have
+  // at least views::kFuzzingOverlapPercentage of their area covered by
+  // |rect|. Among these rectangles, choose one that is closest to the center
+  // line of |rect| and return its corresponding View. If there are no such
+  // rectangles, NULL is returned.
+  virtual View* GetEventHandlerForRect(const gfx::Rect& rect);
+
   // Return the cursor that should be used for this view or the default cursor.
   // The event location is in the receiver's coordinate system. The caller is
   // responsible for managing the lifetime of the returned object, though that
   // lifetime may vary from platform to platform. On Windows and Aura,
   // the cursor is a shared resource.
   virtual gfx::NativeCursor GetCursor(const MouseEvent& event);
 
   // Convenience to test whether a point is within this view's bounds
   virtual bool HitTest(const gfx::Point& l) const;
 
@@ skipping 953 matching lines @@
   base::win::ScopedComPtr<NativeViewAccessibilityWin>
       native_view_accessibility_win_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(View);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_VIEW_H_