Added ppapi::Context3D interface. The API has already been reviewed. I am add...

webkit/plugins/ppapi/ppapi_plugin_instance.h

Index: webkit/plugins/ppapi/ppapi_plugin_instance.h
===================================================================
--- webkit/plugins/ppapi/ppapi_plugin_instance.h	(revision 69970)
+++ webkit/plugins/ppapi/ppapi_plugin_instance.h	(working copy)
@@ -53,7 +53,7 @@
 class PluginDelegate;
 class PluginModule;
 class PPB_Graphics2D_Impl;
-class PPB_Graphics3D_Impl;
+class PPB_Context3D_Impl;
 class PPB_ImageData_Impl;
 class PPB_URLLoader_Impl;
 class Resource;
@@ -227,7 +227,7 @@
 
   // Get the bound graphics context as a concrete 3D graphics context or returns
   // null if the context is not 3D.
-  PPB_Graphics3D_Impl* bound_graphics_3d() const;
+  PPB_Context3D_Impl* bound_graphics_3d() const;
 
   PluginDelegate* delegate_;
   scoped_refptr<PluginModule> module_;