added CTRL+Click and SHIFT+Click handler for context menu, Back and Forward.

chrome/browser/ui/tab_contents/tab_contents_wrapper_delegate.h

Index: chrome/browser/ui/tab_contents/tab_contents_wrapper_delegate.h
diff --git a/chrome/browser/ui/tab_contents/tab_contents_wrapper_delegate.h b/chrome/browser/ui/tab_contents/tab_contents_wrapper_delegate.h
index 3862f55b655292536d153fb3b5a9d5516f14d890..8fc2530ff45f0d8acd03fbe60af5a2abbe073fde 100644
--- a/chrome/browser/ui/tab_contents/tab_contents_wrapper_delegate.h
+++ b/chrome/browser/ui/tab_contents/tab_contents_wrapper_delegate.h
@@ -7,6 +7,7 @@
 #pragma once
 
 #include "base/basictypes.h"
+#include "webkit/glue/window_open_disposition.h"
 
 class TabContentsWrapper;
 struct WebApplicationInfo;
@@ -26,6 +27,10 @@ class TabContentsWrapperDelegate {
   virtual void SwapTabContents(TabContentsWrapper* old_tc,
                                TabContentsWrapper* new_tc) = 0;
 
+  // Navigation interface to supoprt disposition.
+  virtual void GoBack(WindowOpenDisposition disposition) = 0;
+  virtual void GoForward(WindowOpenDisposition disposition) = 0;
+
  protected:
   virtual ~TabContentsWrapperDelegate();
 };