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

chrome/browser/tab_contents/spellchecker_submenu_observer_mac.cc

 // Copyright (c) 2011 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 "chrome/browser/tab_contents/spellchecker_submenu_observer.h"
 
 #include "base/logging.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/spellchecker/spellcheck_platform_mac.h"
@@ skipping 16 matching lines @@
     int group)
     : proxy_(proxy),
       submenu_model_(delegate),
       check_spelling_while_typing_(false) {
   DCHECK(proxy_);
 }
 
 SpellCheckerSubMenuObserver::~SpellCheckerSubMenuObserver() {
 }
 
-void SpellCheckerSubMenuObserver::InitMenu(const ContextMenuParams& params) {
+void SpellCheckerSubMenuObserver::InitMenu(
+    const content::ContextMenuParams& params) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   check_spelling_while_typing_ = params.spellcheck_enabled;
 
   // Add an item that toggles the spelling panel.
   submenu_model_.AddCheckItem(
       IDC_SPELLPANEL_TOGGLE,
       l10n_util::GetStringUTF16(
           spellcheck_mac::SpellingPanelVisible() ?
               IDS_CONTENT_CONTEXT_HIDE_SPELLING_PANEL :
@@ skipping 73 matching lines @@
     case IDC_CHECK_SPELLING_OF_THIS_FIELD:
       rvh->Send(new SpellCheckMsg_ToggleSpellCheck(rvh->routing_id()));
       break;
 
     case IDC_SPELLPANEL_TOGGLE:
       rvh->Send(new SpellCheckMsg_ToggleSpellPanel(
           rvh->routing_id(), spellcheck_mac::SpellingPanelVisible()));
       break;
   }
 }