[Extensions] Update more bindings and allow for multiple feature access

extensions/renderer/app_window_custom_bindings.cc

Index: extensions/renderer/app_window_custom_bindings.cc
diff --git a/extensions/renderer/app_window_custom_bindings.cc b/extensions/renderer/app_window_custom_bindings.cc
index 6553e5e307155a7d9d48be9c59abdcc522401dae..e6cc27b974cb3e823759a192db59c9fabb3d489c 100644
--- a/extensions/renderer/app_window_custom_bindings.cc
+++ b/extensions/renderer/app_window_custom_bindings.cc
@@ -22,8 +22,10 @@ namespace extensions {
 
 AppWindowCustomBindings::AppWindowCustomBindings(ScriptContext* context)
     : ObjectBackedNativeHandler(context) {
-  RouteFunction("GetFrame", base::Bind(&AppWindowCustomBindings::GetFrame,
-                                       base::Unretained(this)));
+  RouteFunction("GetFrame",
+                std::vector<std::string>({"app.window", "input.ime"}),

[asargent_no_longer_on_chrome, 2016/05/06 17:09:04]

why is "input.ime" here in app_window_custom_bindings? (whatever the answer is,
it probably deserves adding a comment here)

[Devlin, 2016/05/06 22:13:47]

Done.

+                base::Bind(&AppWindowCustomBindings::GetFrame,
+                           base::Unretained(this)));
 
   RouteFunction("GetWindowControlsHtmlTemplate",
       base::Bind(&AppWindowCustomBindings::GetWindowControlsHtmlTemplate,