Template methods on Timer classes instead of the classes themselves.

ui/accelerated_widget_mac/io_surface_layer.h

 // Copyright 2013 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_ACCELERATED_WIDGET_MAC_IO_SURFACE_LAYER_H_
 #define UI_ACCELERATED_WIDGET_MAC_IO_SURFACE_LAYER_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/mac/scoped_cftyperef.h"
@@ skipping 91 matching lines @@
   // new content to draw.
   uint64 did_not_draw_counter_;
 
   // Set when inside a BeginPumpingFrames/EndPumpingFrames block.
   bool is_pumping_frames_;
 
   // The browser places back-pressure on the GPU by not acknowledging swap
   // calls until they appear on the screen. This can lead to hangs if the
   // view is moved offscreen (among other things). Prevent hangs by always
   // acknowledging the frame after timeout of 1/6th of a second  has passed.
-  base::DelayTimer<IOSurfaceLayerHelper> timer_;
+  base::DelayTimer timer_;
 };
 
 }  // namespace ui
 
 // The CoreAnimation layer for drawing accelerated content.
 @interface IOSurfaceLayer : CAOpenGLLayer {
  @private
   scoped_refptr<ui::IOSurfaceTexture> iosurface_;
   scoped_refptr<ui::IOSurfaceContext> context_;
 
@@ skipping 31 matching lines @@
 // Force a draw immediately, but only if one was requested.
 - (void)displayIfNeededAndAck;
 
 // Mark a bracket in which new frames are being pumped in a restricted nested
 // run loop.
 - (void)beginPumpingFrames;
 - (void)endPumpingFrames;
 @end
 
 #endif  // UI_ACCELERATED_WIDGET_MAC_IO_SURFACE_LAYER_H_