Move MainWorldScriptContext accessor/method from WebFrame to WebLocalFrame.

content/renderer/java/gin_java_bridge_object.h

Index: content/renderer/java/gin_java_bridge_object.h
diff --git a/content/renderer/java/gin_java_bridge_object.h b/content/renderer/java/gin_java_bridge_object.h
index 25d1840b801a4b02b4c5acfec10eba806d3418ec..23c7efa118602509c64a8694e370b9e1835e612d 100644
--- a/content/renderer/java/gin_java_bridge_object.h
+++ b/content/renderer/java/gin_java_bridge_object.h
@@ -17,7 +17,7 @@
 #include "v8/include/v8-util.h"
 
 namespace blink {
-class WebFrame;
+class WebLocalFrame;
 }
 
 namespace content {
@@ -40,7 +40,7 @@ class GinJavaBridgeObject : public gin::Wrappable<GinJavaBridgeObject>,
       v8::Isolate* isolate) override;
 
   static GinJavaBridgeObject* InjectNamed(
-      blink::WebFrame* frame,
+      blink::WebLocalFrame* frame,
       const base::WeakPtr<GinJavaBridgeDispatcher>& dispatcher,
       const std::string& object_name,
       GinJavaBridgeDispatcher::ObjectID object_id);