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

chrome/browser/ui/webui/html_dialog_ui.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/ui/webui/html_dialog_ui.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/lazy_instance.h"
 #include "base/property_bag.h"
@@ skipping 85 matching lines @@
   // Non-file based UI needs to not have access to the Web UI bindings
   // for security reasons. The code hosting the dialog should provide
   // dialog specific functionality through other bindings and methods
   // that are scoped in duration to the dialogs existence.
   web_ui->SetBindings(web_ui->GetBindings() & ~content::BINDINGS_POLICY_WEB_UI);
 }
 
 ExternalHtmlDialogUI::~ExternalHtmlDialogUI() {
 }
 
-bool HtmlDialogUIDelegate::HandleContextMenu(const ContextMenuParams& params) {
+bool HtmlDialogUIDelegate::HandleContextMenu(
+    const content::ContextMenuParams& params) {
   return false;
 }
 
 bool HtmlDialogUIDelegate::HandleOpenURLFromTab(
     content::WebContents* source,
     const content::OpenURLParams& params,
     content::WebContents** out_new_contents) {
   return false;
 }
 
 bool HtmlDialogUIDelegate::HandleAddNewContents(
     content::WebContents* source,
     content::WebContents* new_contents,
     WindowOpenDisposition disposition,
     const gfx::Rect& initial_pos,
     bool user_gesture) {
   return false;
 }