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

chrome/browser/chromeos/login/login_html_dialog.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 "chrome/browser/chromeos/login/login_html_dialog.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/chromeos/frame/bubble_frame_view.h"
 #include "chrome/browser/chromeos/frame/bubble_window.h"
 #include "chrome/browser/chromeos/login/helper.h"
@@ skipping 123 matching lines @@
 void LoginHtmlDialog::OnCloseContents(WebContents* source,
                                       bool* out_close_dialog) {
   if (out_close_dialog)
     *out_close_dialog = true;
 }
 
 bool LoginHtmlDialog::ShouldShowDialogTitle() const {
   return true;
 }
 
-bool LoginHtmlDialog::HandleContextMenu(const ContextMenuParams& params) {
+bool LoginHtmlDialog::HandleContextMenu(
+    const content::ContextMenuParams& params) {
   // Disable context menu.
   return true;
 }
 
 void LoginHtmlDialog::Observe(int type,
                               const content::NotificationSource& source,
                               const content::NotificationDetails& details) {
   DCHECK(type == content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME);
 #if defined(USE_AURA)
   // TODO(saintlou): Do we need a throbber for Aura?
   NOTIMPLEMENTED();
 #else
   if (bubble_frame_view_)
     bubble_frame_view_->StopThrobber();
 #endif
 }
 
 }  // namespace chromeos