Convert most remaining resources to use the API/thunk system. The significant

webkit/plugins/ppapi/ppb_font_impl.cc

Index: webkit/plugins/ppapi/ppb_font_impl.cc
===================================================================
--- webkit/plugins/ppapi/ppb_font_impl.cc	(revision 89672)
+++ webkit/plugins/ppapi/ppb_font_impl.cc	(working copy)
@@ -6,6 +6,7 @@
 
 #include "ppapi/c/dev/ppb_font_dev.h"
 #include "ppapi/shared_impl/ppapi_preferences.h"
+#include "ppapi/thunk/enter.h"
 #include "ppapi/thunk/thunk.h"
 #include "webkit/plugins/ppapi/common.h"
 #include "webkit/plugins/ppapi/plugin_module.h"
@@ -14,7 +15,9 @@
 #include "webkit/plugins/ppapi/string.h"
 #include "webkit/plugins/ppapi/var.h"
 
-using ::ppapi::WebKitForwarding;
+using ppapi::thunk::EnterResource;
+using ppapi::thunk::PPB_ImageData_API;
+using ppapi::WebKitForwarding;
 
 namespace webkit {
 namespace ppapi {
@@ -56,10 +59,6 @@
   return this;
 }
 
-PPB_Font_Impl* PPB_Font_Impl::AsPPB_Font_Impl() {
-  return this;
-}
-
 PP_Bool PPB_Font_Impl::Describe(PP_FontDescription_Dev* description,
                                 PP_FontMetrics_Dev* metrics) {
   std::string face;
@@ -80,10 +79,12 @@
                                   const PP_Rect* clip,
                                   PP_Bool image_data_is_opaque) {
   // Get and map the image data we're painting to.
-  scoped_refptr<PPB_ImageData_Impl> image_resource(
-      Resource::GetAs<PPB_ImageData_Impl>(image_data));
-  if (!image_resource.get())
+  EnterResource<PPB_ImageData_API> enter(image_data, true);
+  if (enter.failed())
     return PP_FALSE;
+  PPB_ImageData_Impl* image_resource =
+      static_cast<PPB_ImageData_Impl*>(enter.object());
+
   ImageDataAutoMapper mapper(image_resource);
   if (!mapper.is_valid())
     return PP_FALSE;