Simplfy Pepepr2 bolierplate code.

webkit/glue/plugins/pepper_plugin_instance.cc

 // Copyright (c) 2010 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 "webkit/glue/plugins/pepper_plugin_instance.h"
 
 #include "base/logging.h"
 #include "base/scoped_ptr.h"
 #include "gfx/rect.h"
 #include "third_party/ppapi/c/pp_instance.h"
 #include "third_party/ppapi/c/pp_event.h"
 #include "third_party/ppapi/c/pp_rect.h"
 #include "third_party/ppapi/c/pp_resource.h"
 #include "third_party/ppapi/c/pp_var.h"
 #include "third_party/ppapi/c/ppb_instance.h"
 #include "third_party/ppapi/c/ppp_instance.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebDocument.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebElement.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebFrame.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebInputEvent.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebPluginContainer.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebRect.h"
 #include "webkit/glue/plugins/pepper_device_context_2d.h"
 #include "webkit/glue/plugins/pepper_plugin_delegate.h"
 #include "webkit/glue/plugins/pepper_plugin_module.h"
-#include "webkit/glue/plugins/pepper_resource_tracker.h"
 #include "webkit/glue/plugins/pepper_var.h"
 
 using WebKit::WebFrame;
 using WebKit::WebInputEvent;
 using WebKit::WebPluginContainer;
 
 namespace pepper {
 
 namespace {
 
@@ skipping 170 matching lines @@
   if (!device_id) {
     // Special-case clearing the current device.
     if (device_context_2d_) {
       device_context_2d_->BindToInstance(NULL);
       device_context_2d_ = NULL;
       InvalidateRect(gfx::Rect());
     }
     return true;
   }
 
-  scoped_refptr<Resource> device_resource =
-      ResourceTracker::Get()->GetResource(device_id);
-  if (!device_resource.get())
-    return false;
+  scoped_refptr<DeviceContext2D> device_2d =
+      Resource::GetAs<DeviceContext2D>(device_id);
 
-  DeviceContext2D* device_2d = device_resource->AsDeviceContext2D();
   if (device_2d) {
     if (!device_2d->BindToInstance(this))
       return false;  // Can't bind to more than one instance.
     device_context_2d_ = device_2d;
     // BindToInstance will have invalidated the plugin if necessary.
   }
 
   return true;
 }
 
@@ skipping 83 matching lines @@
   if (device_context_2d_)
     device_context_2d_->ViewInitiatedPaint();
 }
 
 void PluginInstance::ViewFlushedPaint() {
   if (device_context_2d_)
     device_context_2d_->ViewFlushedPaint();
 }
 
 }  // namespace pepper