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

chrome/browser/tab_contents/chrome_tab_contents_view_wrapper_gtk.h

 // 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.
 
 #ifndef CHROME_BROWSER_TAB_CONTENTS_CHROME_TAB_CONTENTS_VIEW_WRAPPER_GTK_H_
 #define CHROME_BROWSER_TAB_CONTENTS_CHROME_TAB_CONTENTS_VIEW_WRAPPER_GTK_H_
 #pragma once
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 20 matching lines @@
   void RemoveConstrainedWindow(ConstrainedWindowGtk* constrained_window);
 
   // Overridden from TabContentsViewGtkWrapper:
   virtual void WrapView(content::TabContentsViewGtk* view) OVERRIDE;
   virtual gfx::NativeView GetNativeView() const OVERRIDE;
   virtual void OnCreateViewForWidget() OVERRIDE;
   virtual void Focus() OVERRIDE;
   virtual gboolean OnNativeViewFocusEvent(GtkWidget* widget,
                                           GtkDirectionType type,
                                           gboolean* return_value) OVERRIDE;
-  virtual void ShowContextMenu(const ContextMenuParams& params) OVERRIDE;
+  virtual void ShowContextMenu(
+      const content::ContextMenuParams& params) OVERRIDE;
 
  private:
   // Sets the location of the constrained windows.
   CHROMEGTK_CALLBACK_1(ChromeTabContentsViewWrapperGtk, void,
                        OnSetFloatingPosition,
                        GtkAllocation*);
 
   // Contains |expanded_| as its GtkBin member.
   ui::OwnedWidgetGtk floating_;
 
   // Our owner. Also owns our child widgets.
   content::TabContentsViewGtk* view_;
 
   // The UI for the constrained dialog currently displayed. This is owned by
   // TabContents, not the view.
   ConstrainedWindowGtk* constrained_window_;
 
   // The context menu is reset every time we show it, but we keep a pointer to
   // between uses so that it won't go out of scope before we're done with it.
   scoped_ptr<RenderViewContextMenuGtk> context_menu_;
 
   // The chrome specific delegate that receives events from WebDragDestGtk.
   scoped_ptr<WebDragBookmarkHandlerGtk> bookmark_handler_gtk_;
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_CHROME_TAB_CONTENTS_VIEW_WRAPPER_GTK_H_