Move ContextMenuParams struct from webkit/glue to content/public/common. The reasons are:

content/browser/tab_contents/interstitial_page_impl.cc

Index: content/browser/tab_contents/interstitial_page_impl.cc
===================================================================
--- content/browser/tab_contents/interstitial_page_impl.cc	(revision 121660)
+++ content/browser/tab_contents/interstitial_page_impl.cc	(working copy)
@@ -93,7 +93,7 @@
   virtual void ShowCreatedWidget(int route_id,
                                  const gfx::Rect& initial_pos);
   virtual void ShowCreatedFullscreenWidget(int route_id);
-  virtual void ShowContextMenu(const ContextMenuParams& params);
+  virtual void ShowContextMenu(const content::ContextMenuParams& params);
   virtual void ShowPopupMenu(const gfx::Rect& bounds,
                              int item_height,
                              double item_font_size,
@@ -697,7 +697,7 @@
 }
 
 void InterstitialPageImpl::InterstitialPageRVHViewDelegate::ShowContextMenu(
-    const ContextMenuParams& params) {
+    const content::ContextMenuParams& params) {
 }
 
 void InterstitialPageImpl::InterstitialPageRVHViewDelegate::ShowPopupMenu(