Remove the old type system for proxied resources. These were no longer being used.

ppapi/proxy/ppb_font_proxy.h

 // Copyright (c) 2011 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 PPAPI_PROXY_PPB_FONT_PROXY_H_
 #define PPAPI_PROXY_PPB_FONT_PROXY_H_
 
 #include "base/basictypes.h"
 #include "base/synchronization/waitable_event.h"
 #include "ppapi/proxy/host_resource.h"
@@ skipping 38 matching lines @@
   // it lives entirely in the plugin process. So the resource ID in the host
   // resource should be 0. However, various code assumes the instance in the
   // host resource is valid (this is how resources are associated with
   // instances), so that should be set.
   Font(const HostResource& resource, const PP_FontDescription_Dev& desc);
   virtual ~Font();
 
   // ResourceObjectBase.
   virtual ppapi::thunk::PPB_Font_API* AsPPB_Font_API() OVERRIDE;
 
-  // PluginResource overrides.
-  virtual Font* AsFont() OVERRIDE;
-
   // PPB_Font_API implementation.
   virtual PP_Bool Describe(PP_FontDescription_Dev* description,
                            PP_FontMetrics_Dev* metrics) OVERRIDE;
   virtual PP_Bool DrawTextAt(PP_Resource image_data,
                              const PP_TextRun_Dev* text,
                              const PP_Point* position,
                              uint32_t color,
                              const PP_Rect* clip,
                              PP_Bool image_data_is_opaque) OVERRIDE;
   virtual int32_t MeasureText(const PP_TextRun_Dev* text) OVERRIDE;
@@ skipping 11 matching lines @@
 
   scoped_ptr<ppapi::WebKitForwarding::Font> font_forwarding_;
 
   DISALLOW_COPY_AND_ASSIGN(Font);
 };
 
 }  // namespace proxy
 }  // namespace pp
 
 #endif  // PPAPI_PROXY_PPB_FONT_PROXY_H_