Bind Window focus ability to the ExecutionContext instead of the process.

public/web/WebScopedWindowFocusAllowedIndicator.h

Index: public/web/WebScopedWindowFocusAllowedIndicator.h
diff --git a/public/web/WebScopedWindowFocusAllowedIndicator.h b/public/web/WebScopedWindowFocusAllowedIndicator.h
index ccb80b156819327527d48e469e0fd5385c451209..aadfe1436c04588b46281b86f6dde03087577ba3 100644
--- a/public/web/WebScopedWindowFocusAllowedIndicator.h
+++ b/public/web/WebScopedWindowFocusAllowedIndicator.h
@@ -35,18 +35,23 @@
 
 namespace blink {
 
+class ScopedWindowFocusAllowedIndicator;
+class WebDocument;
 class WindowFocusAllowedIndicator;
 
 class WebScopedWindowFocusAllowedIndicator {
 public:
+    explicit WebScopedWindowFocusAllowedIndicator(WebDocument* document) { initialize(document); }
     WebScopedWindowFocusAllowedIndicator() { initialize(); }

[jochen (gone - plz use gerrit), 2014/12/10 14:00:55]

this constructor is now deprecated, right? can you add a comment?

     ~WebScopedWindowFocusAllowedIndicator() { reset(); }
 
 private:
+    BLINK_EXPORT void initialize(WebDocument*);
     BLINK_EXPORT void initialize();
     BLINK_EXPORT void reset();
 
     WebPrivateOwnPtr<WindowFocusAllowedIndicator> m_indicator;
+    WebPrivateOwnPtr<ScopedWindowFocusAllowedIndicator> m_private;
 };
 
 }