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

webkit/plugins/ppapi/host_globals.h

Index: webkit/plugins/ppapi/host_globals.h
===================================================================
--- webkit/plugins/ppapi/host_globals.h	(revision 213350)
+++ webkit/plugins/ppapi/host_globals.h	(working copy)
@@ -16,7 +16,7 @@
 namespace webkit {
 namespace ppapi {
 
-class PluginInstance;
+class PluginInstanceImpl;
 class PluginModule;
 
 class HostGlobals : public ::ppapi::PpapiGlobals {
@@ -79,7 +79,7 @@
 
   // Adds a new plugin instance to the list of tracked instances, and returns a
   // new instance handle to identify it.
-  PP_Instance AddInstance(PluginInstance* instance);
+  PP_Instance AddInstance(PluginInstanceImpl* instance);
 
   // Called when a plugin instance was deleted and should no longer be tracked.
   // The given handle should be one generated by AddInstance.
@@ -90,7 +90,7 @@
   // Returns a pointer to the plugin instance object associated with the given
   // instance handle. The return value will be NULL if the handle is invalid or
   // if the instance has crashed.
-  WEBKIT_PLUGINS_EXPORT PluginInstance* GetInstance(PP_Instance instance);
+  WEBKIT_PLUGINS_EXPORT PluginInstanceImpl* GetInstance(PP_Instance instance);
 
  private:
   // PpapiGlobals overrides.
@@ -102,7 +102,7 @@
   HostVarTracker host_var_tracker_;
 
   // Tracks all live instances and their associated object.
-  typedef std::map<PP_Instance, PluginInstance*> InstanceMap;
+  typedef std::map<PP_Instance, PluginInstanceImpl*> InstanceMap;
   InstanceMap instance_map_;
 
   // Tracks all live modules. The pointers are non-owning, the PluginModule