Add an instance parameter to var objects, audio, and the 2D API. This replace...

ppapi/cpp/graphics_2d.h

Index: ppapi/cpp/graphics_2d.h
===================================================================
--- ppapi/cpp/graphics_2d.h	(revision 70488)
+++ ppapi/cpp/graphics_2d.h	(working copy)
@@ -13,6 +13,7 @@
 
 class CompletionCallback;
 class ImageData;
+class Instance;
 class Point;
 class Rect;
 
@@ -27,7 +28,7 @@
 
   // Allocates a new 2D graphics context with the given size in the browser,
   // resulting object will be is_null() if the allocation failed.
-  Graphics2D(const Size& size, bool is_always_opaque);
+  Graphics2D(Instance* instance, const Size& size, bool is_always_opaque);
 
   virtual ~Graphics2D();