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

content/browser/renderer_host/render_view_host_unittest.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/child_process_security_policy_impl.h"
 #include "content/browser/renderer_host/test_render_view_host.h"
 #include "content/browser/tab_contents/navigation_controller_impl.h"
 #include "content/browser/tab_contents/test_tab_contents.h"
 #include "content/common/view_messages.h"
 #include "content/public/browser/navigation_entry.h"
@@ skipping 59 matching lines @@
   virtual void CreateNewWidget(int route_id,
                                WebKit::WebPopupType popup_type) {}
   virtual void CreateNewFullscreenWidget(int route_id) {}
   virtual void ShowCreatedWindow(int route_id,
                                  WindowOpenDisposition disposition,
                                  const gfx::Rect& initial_pos,
                                  bool user_gesture) {}
   virtual void ShowCreatedWidget(int route_id,
                                  const gfx::Rect& initial_pos) {}
   virtual void ShowCreatedFullscreenWidget(int route_id) {}
-  virtual void ShowContextMenu(const ContextMenuParams& params) {}
+  virtual void ShowContextMenu(const content::ContextMenuParams& params) {}
   virtual void ShowPopupMenu(const gfx::Rect& bounds,
                              int item_height,
                              double item_font_size,
                              int selected_item,
                              const std::vector<WebMenuItem>& items,
                              bool right_aligned) {}
   virtual void StartDragging(const WebDropData& drop_data,
                              WebKit::WebDragOperationsMask allowed_ops,
                              const SkBitmap& image,
                              const gfx::Point& image_offset) {
@@ skipping 99 matching lines @@
   // the code actually expects it to have at least one int para, this this
   // bogus message will not fail at de-serialization but should fail in
   // OnMsgInputEventAck() processing.
   IPC::Message message(0, ViewHostMsg_HandleInputEvent_ACK::ID,
                        IPC::Message::PRIORITY_NORMAL);
   rvh()->TestOnMessageReceived(message);
   EXPECT_EQ(1, process()->bad_msg_count());
 }
 
 #endif