Clean up Automation and Chrome Frame IPC code.

chrome_frame/chrome_frame_activex.cc

Index: chrome_frame/chrome_frame_activex.cc
===================================================================
--- chrome_frame/chrome_frame_activex.cc	(revision 69966)
+++ chrome_frame/chrome_frame_activex.cc	(working copy)
@@ -182,14 +182,14 @@
   return hr;
 }
 
-void ChromeFrameActivex::OnLoad(int tab_handle, const GURL& gurl) {
+void ChromeFrameActivex::OnLoad(const GURL& gurl) {
   ScopedComPtr<IDispatch> event;
   std::string url = gurl.spec();
   if (SUCCEEDED(CreateDomEvent("event", url, "", event.Receive())))
     Fire_onload(event);
 
   FireEvent(onload_, url);
-  Base::OnLoad(tab_handle, gurl);
+  Base::OnLoad(gurl);
 }
 
 void ChromeFrameActivex::OnLoadFailed(int error_code, const std::string& url) {
@@ -201,8 +201,7 @@
   Base::OnLoadFailed(error_code, url);
 }
 
-void ChromeFrameActivex::OnMessageFromChromeFrame(int tab_handle,
-                                                  const std::string& message,
+void ChromeFrameActivex::OnMessageFromChromeFrame(const std::string& message,
                                                   const std::string& origin,
                                                   const std::string& target) {
   DVLOG(1) << __FUNCTION__;