Clean up TCW, make it solely a hub for 1:1 observer/helper objects.

chrome/browser/extensions/execute_code_in_tab_function.cc

Index: chrome/browser/extensions/execute_code_in_tab_function.cc
diff --git a/chrome/browser/extensions/execute_code_in_tab_function.cc b/chrome/browser/extensions/execute_code_in_tab_function.cc
index 2d27d1d744deb53a8e47ca93a7ac11af13094e66..684b9ae6f9ea6d19bf13158d7f4d6a90afe1aadf 100644
--- a/chrome/browser/extensions/execute_code_in_tab_function.cc
+++ b/chrome/browser/extensions/execute_code_in_tab_function.cc
@@ -224,8 +224,9 @@ bool ExecuteCodeInTabFunction::Execute(const std::string& code_string) {
   params.code = code_string;
   params.all_frames = all_frames_;
   params.in_main_world = false;
-  contents->render_view_host()->Send(new ExtensionMsg_ExecuteCode(
-      contents->render_view_host()->routing_id(), params));
+  contents->tab_contents()->render_view_host()->Send(
+      new ExtensionMsg_ExecuteCode(
+          contents->tab_contents()->render_view_host()->routing_id(), params));
 
   Observe(contents->tab_contents());
   AddRef();  // balanced in OnExecuteCodeFinished()