Revert "Refactor automation messages." due to mysterious problems on mac.

chrome_frame/chrome_frame_plugin.h

Index: chrome_frame/chrome_frame_plugin.h
diff --git a/chrome_frame/chrome_frame_plugin.h b/chrome_frame/chrome_frame_plugin.h
index 58a76a6d727031a2398b70c5676be9472704e2f6..9ea6ce954e9d418ff4a7edeca8add6fcba2094ab 100644
--- a/chrome_frame/chrome_frame_plugin.h
+++ b/chrome_frame/chrome_frame_plugin.h
@@ -120,7 +120,7 @@ END_MSG_MAP()
 
   virtual void OnHandleContextMenu(int tab_handle, HANDLE menu_handle,
                                    int align_flags,
-                                   const IPC::MiniContextMenuParams& params) {
+                                   const IPC::ContextMenuParams& params) {
     if (!menu_handle || !automation_client_.get()) {
       NOTREACHED();
       return;
@@ -219,7 +219,7 @@ END_MSG_MAP()
   // Return true if menu command is processed, otherwise the command will be
   // passed to Chrome for execution. Override in most-derived class if needed.
   bool HandleContextMenuCommand(UINT cmd,
-                                const IPC::MiniContextMenuParams& params) {
+                                const IPC::ContextMenuParams& params) {
     return false;
   }