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

webkit/glue/context_menu.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 "webkit/glue/context_menu.h"
-#include "webkit/glue/glue_serialize.h"
-
-namespace webkit_glue {
-
-const int32 CustomContextMenuContext::kCurrentRenderWidget = kint32max;
-
-CustomContextMenuContext::CustomContextMenuContext()
-    : is_pepper_menu(false),
-      request_id(0),
-      render_widget_id(kCurrentRenderWidget) {
-}
-
-}  // namespace webkit_glue
-
-ContextMenuParams::ContextMenuParams()
-    : media_type(WebKit::WebContextMenuData::MediaTypeNone),
-      x(0),
-      y(0),
-      is_image_blocked(false),
-      frame_id(0),
-      media_flags(0),
-      speech_input_enabled(false),
-      spellcheck_enabled(false),
-      is_editable(false),
-      edit_flags(0),
-      referrer_policy(WebKit::WebReferrerPolicyDefault) {
-}
-
-ContextMenuParams::ContextMenuParams(const WebKit::WebContextMenuData& data)
-    : media_type(data.mediaType),
-      x(data.mousePosition.x),
-      y(data.mousePosition.y),
-      link_url(data.linkURL),
-      unfiltered_link_url(data.linkURL),
-      src_url(data.srcURL),
-      is_image_blocked(data.isImageBlocked),
-      page_url(data.pageURL),
-      keyword_url(data.keywordURL),
-      frame_url(data.frameURL),
-      frame_id(0),
-      media_flags(data.mediaFlags),
-      selection_text(data.selectedText),
-      misspelled_word(data.misspelledWord),
-      speech_input_enabled(data.isSpeechInputEnabled),
-      spellcheck_enabled(data.isSpellCheckingEnabled),
-      is_editable(data.isEditable),
-#if defined(OS_MACOSX)
-      writing_direction_default(data.writingDirectionDefault),
-      writing_direction_left_to_right(data.writingDirectionLeftToRight),
-      writing_direction_right_to_left(data.writingDirectionRightToLeft),
-#endif  // OS_MACOSX
-      edit_flags(data.editFlags),
-      security_info(data.securityInfo),
-      frame_charset(data.frameEncoding.utf8()),
-      referrer_policy(data.referrerPolicy) {
-  for (size_t i = 0; i < data.dictionarySuggestions.size(); ++i)
-    dictionary_suggestions.push_back(data.dictionarySuggestions[i]);
-
-  custom_context.is_pepper_menu = false;
-  for (size_t i = 0; i < data.customItems.size(); ++i)
-    custom_items.push_back(WebMenuItem(data.customItems[i]));
-
-  if (!data.frameHistoryItem.isNull()) {
-    frame_content_state =
-        webkit_glue::HistoryItemToString(data.frameHistoryItem);
-  }
-}
-
-ContextMenuParams::~ContextMenuParams() {
-}