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

content/browser/tab_contents/tab_contents_view_gtk.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/tab_contents/tab_contents_view_gtk.h"
 
 #include <gdk/gdk.h>
 #include <gdk/gdkkeysyms.h>
 #include <gtk/gtk.h>
 
@@ skipping 359 matching lines @@
                                               initial_pos);
 }
 
 void TabContentsViewGtk::ShowCreatedFullscreenWidget(int route_id) {
   tab_contents_view_helper_.ShowCreatedWidget(tab_contents_,
                                               route_id,
                                               true,
                                               gfx::Rect());
 }
 
-void TabContentsViewGtk::ShowContextMenu(const ContextMenuParams& params) {
+void TabContentsViewGtk::ShowContextMenu(
+    const content::ContextMenuParams& params) {
   // Allow delegates to handle the context menu operation first.
   if (web_contents()->GetDelegate() &&
       web_contents()->GetDelegate()->HandleContextMenu(params)) {
     return;
   }
 
   if (wrapper())
     wrapper()->ShowContextMenu(params);
   else
     DLOG(ERROR) << "Cannot show context menus without a delegate.";
@@ skipping 51 matching lines @@
   // We manually tell our RWHV to resize the renderer content.  This avoids
   // spurious resizes from GTK+.
   RenderWidgetHostView* rwhv = tab_contents_->GetRenderWidgetHostView();
   if (rwhv)
     rwhv->SetSize(size);
   if (tab_contents_->GetInterstitialPage())
     tab_contents_->GetInterstitialPage()->SetSize(size);
 }
 
 }  // namespace content