New thunk system for Pepper proxy and implementation

ppapi/proxy/plugin_resource_tracker.cc

Index: ppapi/proxy/plugin_resource_tracker.cc
===================================================================
--- ppapi/proxy/plugin_resource_tracker.cc	(revision 84344)
+++ ppapi/proxy/plugin_resource_tracker.cc	(working copy)
@@ -10,6 +10,7 @@
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/proxy/plugin_resource.h"
 #include "ppapi/proxy/serialized_var.h"
+#include "ppapi/shared_impl/tracker_base.h"
 
 namespace pp {
 namespace proxy {
@@ -19,6 +20,10 @@
 // When non-NULL, this object overrides the ResourceTrackerSingleton.
 PluginResourceTracker* g_resource_tracker_override = NULL;
 
+::ppapi::shared_impl::TrackerBase* GetTrackerBase() {
+  return PluginResourceTracker::GetInstance();
+}
+
 }  // namespace
 
 PluginResourceTracker::ResourceInfo::ResourceInfo() : ref_count(0) {
@@ -33,6 +38,8 @@
 PluginResourceTracker::ResourceInfo::ResourceInfo(const ResourceInfo& other)
     : ref_count(other.ref_count),
       resource(other.resource) {
+  // Wire up the new shared resource tracker base to use our implementation.
+  ::ppapi::shared_impl::TrackerBase::Init(&GetTrackerBase);
 }
 
 PluginResourceTracker::ResourceInfo::~ResourceInfo() {
@@ -67,6 +74,12 @@
   return Singleton<PluginResourceTracker>::get();
 }
 
+// static
+::ppapi::shared_impl::TrackerBase*
+PluginResourceTracker::GetTrackerBaseInstance() {
+  return GetInstance();
+}
+
 PluginResource* PluginResourceTracker::GetResourceObject(
     PP_Resource pp_resource) {
   ResourceMap::iterator found = resource_map_.find(pp_resource);
@@ -112,6 +125,23 @@
   return found->second;
 }
 
+::ppapi::shared_impl::ResourceObjectBase* PluginResourceTracker::GetResourceAPI(
+    PP_Resource res) {
+  ResourceMap::iterator found = resource_map_.find(res);
+  if (found == resource_map_.end())
+    return NULL;
+  return found->second.resource.get();
+}
+
+::ppapi::shared_impl::FunctionGroupBase* PluginResourceTracker::GetFunctionAPI(
+    PP_Instance inst,
+    pp::proxy::InterfaceID id) {
+  PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(inst);
+  if (dispatcher)
+    return dispatcher->GetFunctionAPI(id);
+  return NULL;
+}
+
 void PluginResourceTracker::ReleasePluginResourceRef(
     const PP_Resource& resource,
     bool notify_browser_on_release) {