Initial views touchui GestureRecognizer support

views/widget/root_view.h

Index: views/widget/root_view.h
diff --git a/views/widget/root_view.h b/views/widget/root_view.h
index 3a2afb990e909c08c6b63d31472c19536441f88d..a127ca542a80811981c5384d521fb328ec62f676 100644
--- a/views/widget/root_view.h
+++ b/views/widget/root_view.h
@@ -11,6 +11,7 @@
 #include "base/memory/ref_counted.h"
 #include "views/focus/focus_manager.h"
 #include "views/focus/focus_search.h"
+#include "views/touchui/gesture_recognizer.h"
 #include "views/view.h"
 
 namespace ui {
@@ -113,6 +114,11 @@ class VIEWS_EXPORT RootView : public View, public FocusTraversable {
   virtual void SetMouseHandler(View* new_mouse_handler) OVERRIDE;
   virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE;
 
+  // GestureManager invokes for recognized GestureEvents.
+  // Identify gesture handler view and passes the gesture events, returns true
+  // if gesture handler consumes else false.
+  bool ForwardGestureEvents(GestureRecognizer::Gestures* gestures);
+
  protected:
   // Overridden from View:
   virtual void ViewHierarchyChanged(bool is_add, View* parent,
@@ -178,6 +184,9 @@ class VIEWS_EXPORT RootView : public View, public FocusTraversable {
   // The view currently handling touch events.
   View* touch_pressed_handler_;
 
+  // The view currently handling gesture events.
+  View* gesture_handling_view_;
+
   // Focus ---------------------------------------------------------------------
 
   // The focus search algorithm.