Expose the V8 script context from WebRemoteFrame.

public/web/WebRemoteFrame.h

Index: public/web/WebRemoteFrame.h
diff --git a/public/web/WebRemoteFrame.h b/public/web/WebRemoteFrame.h
index c72c1972e0df0b2eabeb16dc3b5962916e0f51b3..c8515073d741ef8af5d9a6d7222910f534f55044 100644
--- a/public/web/WebRemoteFrame.h
+++ b/public/web/WebRemoteFrame.h
@@ -44,6 +44,11 @@ public:
     virtual void didStartLoading() = 0;
     virtual void didStopLoading() = 0;
 
+    // Temporary method to allow embedders to get the script context of a
+    // remote frame. This should only be used by legacy code that has not yet
+    // migrated over to the new OOPI infrastructure.
+    virtual v8::Local<v8::Context> deprecatedMainWorldScriptContext() const = 0;
+
 protected:
     explicit WebRemoteFrame(WebTreeScopeType scope) : WebFrame(scope) { }
 };