Create a public API around webkit::ppapi::PluginInstance and use it in chrome. After this, webkit/p…

webkit/plugins/ppapi/resource_helper.h

Index: webkit/plugins/ppapi/resource_helper.h
===================================================================
--- webkit/plugins/ppapi/resource_helper.h	(revision 213462)
+++ webkit/plugins/ppapi/resource_helper.h	(working copy)
@@ -17,7 +17,7 @@
 namespace webkit {
 namespace ppapi {
 
-class PluginInstance;
+class PluginInstanceImpl;
 class PluginModule;
 class PluginDelegate;
 
@@ -30,7 +30,8 @@
  public:
   // Returns the instance implementation object for the given resource, or NULL
   // if the resource has outlived its instance.
-  static PluginInstance* GetPluginInstance(const ::ppapi::Resource* resource);
+  static PluginInstanceImpl* GetPluginInstance(
+      const ::ppapi::Resource* resource);
 
   // Returns the module for the given resource, or NULL if the resource has
   // outlived its instance.
@@ -42,7 +43,7 @@
   static PluginDelegate* GetPluginDelegate(const ::ppapi::Resource* resource);
 
   // Returns the instance implementation object for the pp_instance.
-  static PluginInstance* PPInstanceToPluginInstance(PP_Instance instance);
+  static PluginInstanceImpl* PPInstanceToPluginInstance(PP_Instance instance);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(ResourceHelper);