Convert the PluginResource to be refcounted.

ppapi/proxy/plugin_resource_tracker.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_PLUGIN_RESOURCE_TRACKER_H_
 #define PPAPI_PROXY_PLUGIN_RESOURCE_TRACKER_H_
 
 #include <map>
 #include <utility>
 
 #include "base/compiler_specific.h"
-#include "base/memory/linked_ptr.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_stdint.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_var.h"
 #include "ppapi/proxy/host_resource.h"
 #include "ppapi/proxy/plugin_var_tracker.h"
 #include "ppapi/shared_impl/tracker_base.h"
 
 template<typename T> struct DefaultSingletonTraits;
@@ skipping 20 matching lines @@
   static ::ppapi::TrackerBase* GetTrackerBaseInstance();
 
   // Returns the object associated with the given resource ID, or NULL if
   // there isn't one.
   PluginResource* GetResourceObject(PP_Resource pp_resource);
 
   // Adds the given resource object to the tracked list, and returns the
   // plugin-local PP_Resource ID that identifies the resource. Note that this
   // PP_Resource is not valid to send to the host, use
   // PluginResource.host_resource() to get that.
-  PP_Resource AddResource(linked_ptr<PluginResource> object);
+  //
+  // The resource tracker will take a reference to the given object.
+  PP_Resource AddResource(PluginResource* object);
 
   void AddRefResource(PP_Resource resource);
   void ReleaseResource(PP_Resource resource);
 
   // Given a host resource, maps it to an existing plugin resource ID if it
   // exists, or returns 0 on failure.
   PP_Resource PluginResourceForHostResource(
       const HostResource& resource) const;
 
   PluginVarTracker& var_tracker() {
@@ skipping 17 matching lines @@
  private:
   friend struct DefaultSingletonTraits<PluginResourceTracker>;
   friend class PluginResourceTrackerTest;
   friend class PluginProxyTestHarness;
 
   PluginResourceTracker();
   virtual ~PluginResourceTracker();
 
   struct ResourceInfo {
     ResourceInfo();
-    ResourceInfo(int ref_count, linked_ptr<PluginResource> r);
+    ResourceInfo(int ref_count, PluginResource* r);
     ResourceInfo(const ResourceInfo& other);
     ~ResourceInfo();
 
     ResourceInfo& operator=(const ResourceInfo& other);
 
     int ref_count;
-    linked_ptr<PluginResource> resource;  // May be NULL.
+    scoped_refptr<PluginResource> resource;  // May be NULL.
   };
 
   void ReleasePluginResourceRef(const PP_Resource& var,
                                 bool notify_browser_on_release);
 
   // Use the var_tracker_test_override_ instead if it's non-NULL.
   //
   // TODO(brettw) this should be somehow separated out from here. I'm thinking
   // of some global object that manages PPAPI globals, including separate var
   // and resource trackers.
@@ skipping 15 matching lines @@
   // duplicates.
   PP_Resource last_resource_id_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginResourceTracker);
 };
 
 }  // namespace proxy
 }  // namespace pp
 
 #endif  // PPAPI_PROXY_PLUGIN_RESOURCE_TRACKER_H_