Move MainWorldScriptContext accessor/method from WebFrame to WebLocalFrame.

content/renderer/dom_automation_controller.h

Index: content/renderer/dom_automation_controller.h
diff --git a/content/renderer/dom_automation_controller.h b/content/renderer/dom_automation_controller.h
index d684f96016009efa022fe2b9c8c4c0522ded6627..8742ec40c3598c48d45e1e30f2afc2c23e3bdd68 100644
--- a/content/renderer/dom_automation_controller.h
+++ b/content/renderer/dom_automation_controller.h
@@ -74,7 +74,7 @@
 */
 
 namespace blink {
-class WebFrame;
+class WebLocalFrame;
 }
 
 namespace gin {
@@ -90,7 +90,7 @@ class DomAutomationController : public gin::Wrappable<DomAutomationController>,
  public:
   static gin::WrapperInfo kWrapperInfo;
 
-  static void Install(RenderFrame* render_frame, blink::WebFrame* frame);
+  static void Install(RenderFrame* render_frame, blink::WebLocalFrame* frame);
 
   // Makes the renderer send a javascript value to the app.
   // The value to be sent can be either of type String,