Cleanup: Use plugin constants in more places.

chrome/renderer/plugins/plugin_placeholder.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/renderer/plugins/plugin_placeholder.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/json/string_escape.h"
 #include "base/string_piece.h"
@@ skipping 26 matching lines @@
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebData.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebPoint.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebVector.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/layout.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "webkit/glue/webpreferences.h"
 #include "webkit/plugins/npapi/plugin_list.h"
 #include "webkit/plugins/webview_plugin.h"
 
+#if defined(ENABLE_MOBILE_YOUTUBE_PLUGIN)
+#include "webkit/plugins/plugin_constants.h"
+#endif
+
 using content::RenderThread;
 using content::RenderView;
 using WebKit::WebContextMenuData;
 using WebKit::WebDocument;
 using WebKit::WebElement;
 using WebKit::WebFrame;
 using WebKit::WebMenuItemInfo;
 using WebKit::WebMouseEvent;
 using WebKit::WebNode;
 using WebKit::WebPlugin;
@@ skipping 566 matching lines @@
   return true;
 }
 
 bool PluginPlaceholder::IsYouTubeURL(const GURL& url,
                                        const std::string& mime_type) {
   std::string host = url.host();
   bool is_youtube = EndsWith(host, "youtube.com", true) ||
       EndsWith(host, "youtube-nocookie.com", true);
 
   return is_youtube && IsValidYouTubeVideo(url.path()) &&
-      LowerCaseEqualsASCII(mime_type, "application/x-shockwave-flash");
+      LowerCaseEqualsASCII(mime_type, kFlashPluginSwfMimeType);
 }
 #endif