touch: Cleanup touch-event mode switching on windows.

content/browser/renderer_host/render_widget_host_view_win.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 CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_WIN_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_WIN_H_
 
 #include <atlbase.h>
 #include <atlapp.h>
 #include <atlcrack.h>
@@ skipping 183 matching lines @@
   virtual void WillWmDestroy() OVERRIDE;
   virtual void Destroy() OVERRIDE;
   virtual void SetTooltipText(const string16& tooltip_text) OVERRIDE;
   virtual BackingStore* AllocBackingStore(const gfx::Size& size) OVERRIDE;
   virtual void CopyFromCompositingSurface(
       const gfx::Rect& src_subrect,
       const gfx::Size& dst_size,
       const base::Callback<void(bool)>& callback,
       skia::PlatformCanvas* output) OVERRIDE;
   virtual void OnAcceleratedCompositingStateChange() OVERRIDE;
-  virtual void ProcessTouchAck(WebKit::WebInputEvent::Type type,
-                               bool processed) OVERRIDE;
+  virtual void ProcessTouchAck(bool processed) OVERRIDE;
   virtual void SetHasHorizontalScrollbar(
       bool has_horizontal_scrollbar) OVERRIDE;
   virtual void SetScrollOffsetPinning(
       bool is_pinned_to_left, bool is_pinned_to_right) OVERRIDE;
   virtual gfx::GLSurfaceHandle GetCompositingSurface() OVERRIDE;
   virtual void AcceleratedSurfaceBuffersSwapped(
       const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
       int gpu_host_id) OVERRIDE;
   virtual void AcceleratedSurfacePostSubBuffer(
       const GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params& params,
@@ skipping 184 matching lines @@
   LRESULT OnReconvertString(RECONVERTSTRING* reconv);
   LRESULT OnQueryCharPosition(IMECHARPOSITION* position);
 
   // Displays the on screen keyboard for editable fields.
   void DisplayOnScreenKeyboardIfNeeded();
 
   // Invoked in a delayed task to reset the fact that we are in the context of
   // a WM_POINTERDOWN message.
   void ResetPointerDownContext();
 
-  // Switches between raw-touches mode and gesture mode. Currently touch mode
-  // will only take effect when kEnableTouchEvents is in effect.
-  void UpdateDesiredTouchMode(bool touch);
+  // Sets the appropriate mode for raw-touches or gestures. Currently touch mode
+  // will only take effect when kEnableTouchEvents is in effect (on Win7+).
+  void UpdateDesiredTouchMode();
 
   // Set window to receive gestures.
   void SetToGestureMode();
 
   // Set window to raw touch events. Returns whether registering was successful.
   bool SetToTouchMode();
 
   // Configures the enable/disable state of |ime_input_| to match with the
   // current |text_input_type_|.
   void UpdateIMEState();
@@ skipping 155 matching lines @@
   bool touch_events_enabled_;
 
   scoped_ptr<ui::GestureRecognizer> gesture_recognizer_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewWin);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_WIN_H_