Refactor the PlatformContext layer to have only one class.

chrome/plugin/webplugin_proxy.cc

 // Copyright (c) 2006-2008 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 "chrome/plugin/webplugin_proxy.h"
 
 #include "app/gfx/canvas.h"
 #if defined(OS_WIN)
 #include "app/win_util.h"
 #endif
@@ skipping 458 matching lines @@
     NOTREACHED();
     return;
   }
 
   hdc->Set(CreateCompatibleDC(NULL));
   if (hdc->Get() == NULL) {
     NOTREACHED();
     return;
   }
 
-  skia::PlatformDeviceWin::InitializeDC(hdc->Get());
+  skia::PlatformDevice::InitializeDC(hdc->Get());
   SelectObject(hdc->Get(), bitmap->Get());
 }
 
 void WebPluginProxy::UpdateTransform() {
   if (!windowless_hdc_)
     return;
 
   XFORM xf;
   xf.eDx = static_cast<FLOAT>(-delegate_->GetRect().x());
   xf.eDy = static_cast<FLOAT>(-delegate_->GetRect().y());
@@ skipping 35 matching lines @@
   while (index != resource_clients_.end()) {
     WebPluginResourceClient* client = (*index).second;
 
     if (client == resource_client) {
       resource_clients_.erase(index++);
     } else {
       index++;
     }
   }
 }