Replace MessageLoop::DeleteSoon implementation with one that uses base::Bind.

webkit/plugins/webview_plugin.h

Index: webkit/plugins/webview_plugin.h
diff --git a/webkit/plugins/webview_plugin.h b/webkit/plugins/webview_plugin.h
index 0a9b5d94b14b5a86265dbb9f41e7768b9f40df38..2915adda4f499fcac756ce39f439aa1eb6717973 100644
--- a/webkit/plugins/webview_plugin.h
+++ b/webkit/plugins/webview_plugin.h
@@ -8,7 +8,7 @@
 #include <list>
 
 #include "base/memory/scoped_ptr.h"
-#include "base/task.h"
+#include "base/message_loop_helpers.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebCursorInfo.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrameClient.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPlugin.h"
@@ -142,7 +142,7 @@ class WebViewPlugin: public WebKit::WebPlugin, public WebKit::WebViewClient,
                                   const WebKit::WebURLResponse& response);
 
  private:
-  friend class DeleteTask<WebViewPlugin>;
+  friend class base::DeleteHelper<WebViewPlugin>;
   virtual ~WebViewPlugin();
 
   Delegate* delegate_;