Initial views touchui Gesture Recognizer support

ui/views/view.cc

 // 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.
 
 #include "ui/views/view.h"
 
 #include <algorithm>
 
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
@@ skipping 775 matching lines @@
 }
 
 void View::OnMouseExited(const MouseEvent& event) {
 }
 
 ui::TouchStatus View::OnTouchEvent(const TouchEvent& event) {
   DVLOG(1) << "visited the OnTouchEvent";
   return ui::TOUCH_STATUS_UNKNOWN;
 }
 
+ui::GestureStatus View::OnGestureEvent(const GestureEvent& event) {
+  return ui::GESTURE_STATUS_UNKNOWN;
+}
+
 void View::SetMouseHandler(View *new_mouse_handler) {
   // It is valid for new_mouse_handler to be NULL
   if (parent_)
     parent_->SetMouseHandler(new_mouse_handler);
 }
 
 bool View::OnKeyPressed(const KeyEvent& event) {
   return false;
 }
 
 bool View::OnKeyReleased(const KeyEvent& event) {
   return false;
 }
 
 bool View::OnMouseWheel(const MouseWheelEvent& event) {
   return false;
 }
 
 ui::TextInputClient* View::GetTextInputClient() {
   return NULL;
 }
 
 InputMethod* View::GetInputMethod() {
   Widget* widget = GetWidget();
   return widget ? widget->GetInputMethod() : NULL;
 }
 
+ui::GestureStatus View::ProcessGestureEvent(const GestureEvent& event) {
+  // TODO(Gajen): Implement a grab scheme similar to as as is found in
+  //              MousePressed.
+  return OnGestureEvent(event);
+}
+
 // Accelerators ----------------------------------------------------------------
 
 void View::AddAccelerator(const ui::Accelerator& accelerator) {
   if (!accelerators_.get())
     accelerators_.reset(new std::vector<ui::Accelerator>());
 
   DCHECK(std::find(accelerators_->begin(), accelerators_->end(), accelerator) ==
       accelerators_->end())
       << "Registering the same accelerator multiple times";
 
@@ skipping 1202 matching lines @@
 
   OSExchangeData data;
   WriteDragData(press_pt, &data);
 
   // Message the RootView to do the drag and drop. That way if we're removed
   // the RootView can detect it and avoid calling us back.
   GetWidget()->RunShellDrag(this, data, drag_operations);
 }
 
 }  // namespace views