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

webkit/plugins/ppapi/ppapi_webplugin_impl.h

Index: webkit/plugins/ppapi/ppapi_webplugin_impl.h
===================================================================
--- webkit/plugins/ppapi/ppapi_webplugin_impl.h	(revision 213350)
+++ webkit/plugins/ppapi/ppapi_webplugin_impl.h	(working copy)
@@ -31,7 +31,7 @@
 namespace ppapi {
 
 class PluginDelegate;
-class PluginInstance;
+class PluginInstanceImpl;
 class PluginModule;
 class PPB_URLLoader_Impl;
 
@@ -43,7 +43,7 @@
       const base::WeakPtr<PluginDelegate>& plugin_delegate,
       const base::WeakPtr<content::RenderView>& render_view);
 
-  PluginInstance* instance() { return instance_.get(); }
+  PluginInstanceImpl* instance() { return instance_.get(); }
 
   // WebKit::WebPlugin implementation.
   virtual WebKit::WebPluginContainer* container() const;
@@ -103,7 +103,7 @@
   // True if the instance represents the entire document in a frame instead of
   // being an embedded resource.
   bool full_frame_;
-  scoped_refptr<PluginInstance> instance_;
+  scoped_refptr<PluginInstanceImpl> instance_;
   gfx::Rect plugin_rect_;
   PP_Var instance_object_;
   WebKit::WebPluginContainer* container_;