Add notifications for when V8Proxy creates or destroys a V8 Context.

webkit/glue/webframe.h

Index: webkit/glue/webframe.h
diff --git a/webkit/glue/webframe.h b/webkit/glue/webframe.h
index 1a6ae347cc71b7c4894ff58de431b438f58f63ab..90ba5a3a41e241b1bd968fb2fa6508262e549482 100644
--- a/webkit/glue/webframe.h
+++ b/webkit/glue/webframe.h
@@ -11,6 +11,7 @@
 #include "base/string16.h"
 #include "skia/ext/bitmap_platform_device.h"
 #include "skia/ext/platform_canvas.h"
+#include "webkit/api/public/WebCommon.h"
 
 class GURL;
 class WebAppCacheContext;
@@ -31,6 +32,13 @@ struct WebSize;
 struct WebURLError;
 }
 
+#if WEBKIT_USING_V8
+namespace v8 {
+  template <class T> class Local;
+  class Context;
+}
+#endif
+
 // Every frame in a web page is represented by one WebFrame, including the
 // outermost frame.
 class WebFrame {
@@ -70,6 +78,12 @@ class WebFrame {
 
   virtual NPObject* GetWindowNPObject() = 0;
 
+#if WEBKIT_USING_V8
+  // Returns the V8 context for this frame, or an empty handle if there is
+  // none.
+  virtual v8::Local<v8::Context> GetScriptContext() = 0;
+#endif
+
   // Loads the given WebURLRequest.
   virtual void LoadRequest(const WebKit::WebURLRequest& request) = 0;