touch-event queue: Add a touch-event queue for all platforms.

content/browser/renderer_host/render_widget_host_view_mac.mm

 // 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 "content/browser/renderer_host/render_widget_host_view_mac.h"
 
 #include <QuartzCore/QuartzCore.h>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 1300 matching lines @@
   glMatrixMode(GL_MODELVIEW);
   glLoadIdentity();
 
   plugin_container_manager_.Draw(context, plugin_handle);
 }
 
 void RenderWidgetHostViewMac::ForceTextureReload() {
   plugin_container_manager_.ForceTextureReload();
 }
 
-void RenderWidgetHostViewMac::ProcessTouchAck(bool processed) {
-}
-
 void RenderWidgetHostViewMac::SetHasHorizontalScrollbar(
     bool has_horizontal_scrollbar) {
   [cocoa_view_ setHasHorizontalScrollbar:has_horizontal_scrollbar];
 }
 
 void RenderWidgetHostViewMac::SetScrollOffsetPinning(
     bool is_pinned_to_left, bool is_pinned_to_right) {
   [cocoa_view_ scrollOffsetPinnedToLeft:is_pinned_to_left
                                 toRight:is_pinned_to_right];
 }
@@ skipping 1966 matching lines @@
   if (!string) return NO;
 
   // If the user is currently using an IME, confirm the IME input,
   // and then insert the text from the service, the same as TextEdit and Safari.
   [self confirmComposition];
   [self insertText:string];
   return YES;
 }
 
 @end