Change ScriptInjection to work with WebLocalFrames.

extensions/renderer/user_script_set.cc

Index: extensions/renderer/user_script_set.cc
diff --git a/extensions/renderer/user_script_set.cc b/extensions/renderer/user_script_set.cc
index 92608bd962a862680f120b8624928e5f7983138f..87f91fcf7ff8e070ffbae8e1fa33a81f09d3a2ac 100644
--- a/extensions/renderer/user_script_set.cc
+++ b/extensions/renderer/user_script_set.cc
@@ -171,6 +171,8 @@ scoped_ptr<ScriptInjection> UserScriptSet::GetDeclarativeScriptInjection(
   return scoped_ptr<ScriptInjection>();
 }
 
+// TODO(dcheng): Scripts can't be injected on a remote frame, so this function
+// signature needs to be updated.
 scoped_ptr<ScriptInjection> UserScriptSet::GetInjectionForScript(
     UserScript* script,
     blink::WebFrame* web_frame,
@@ -208,7 +210,7 @@ scoped_ptr<ScriptInjection> UserScriptSet::GetInjectionForScript(
   if (inject_css || inject_js) {
     injection.reset(new ScriptInjection(
         injector.Pass(),
-        web_frame,
+        web_frame->toWebLocalFrame(),
         extension->id(),
         run_location,
         tab_id));