Moved the logic of maintaining the current context to gles2 helper library.

webkit/plugins/ppapi/ppb_graphics_3d_impl.h

Index: webkit/plugins/ppapi/ppb_graphics_3d_impl.h
===================================================================
--- webkit/plugins/ppapi/ppb_graphics_3d_impl.h	(revision 69835)
+++ webkit/plugins/ppapi/ppb_graphics_3d_impl.h	(working copy)
@@ -22,7 +22,7 @@
 }  // namespace gpu
 
 struct PPB_Graphics3D_Dev;
-struct PPB_OpenGLES_Dev;
+struct PPB_OpenGLES2_Dev;
 
 namespace webkit {
 namespace ppapi {
@@ -34,14 +34,10 @@
   virtual ~PPB_Graphics3D_Impl();
 
   static const PPB_Graphics3D_Dev* GetInterface();
-  static const PPB_OpenGLES_Dev* GetOpenGLESInterface();
+  static const PPB_OpenGLES2_Dev* GetOpenGLES2Interface();
 
   static bool Shutdown();
 
-  static PPB_Graphics3D_Impl* GetCurrent();
-
-  static void ResetCurrent();
-
   // Resource override.
   virtual PPB_Graphics3D_Impl* AsPPB_Graphics3D_Impl();
 
@@ -54,8 +50,6 @@
   // TODO(apatrick): Figure out the best semantics here.
   bool BindToInstance(PluginInstance* new_instance);
 
-  bool MakeCurrent();
-
   bool SwapBuffers();
 
   unsigned GetError();