We do not pass enums by conts references. This CL fixes style errors introduced

content/public/browser/web_contents_view_delegate.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_WIN_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_WIN_DELEGATE_H_
 
 #if defined(TOOLKIT_GTK)
 #include <gtk/gtk.h>
 #elif defined(OS_MACOSX)
@@ skipping 27 matching lines @@
 class CONTENT_EXPORT WebContentsViewDelegate {
  public:
   virtual ~WebContentsViewDelegate() {}
 
   // Returns a delegate to process drags not handled by content.
   virtual WebDragDestDelegate* GetDragDestDelegate() = 0;
 
   // Shows a context menu.
   virtual void ShowContextMenu(
       const content::ContextMenuParams& params,
-      const content::ContextMenuSourceType& type) = 0;
+      content::ContextMenuSourceType type) = 0;
 
 #if defined(OS_WIN) || defined(USE_AURA)
   // These methods allow the embedder to intercept WebContentsViewWin's
   // implementation of these WebContentsView methods. See the WebContentsView
   // interface documentation for more information about these methods.
   virtual void StoreFocus() = 0;
   virtual void RestoreFocus() = 0;
   virtual bool Focus() = 0;
   virtual void TakeFocus(bool reverse) = 0;
   virtual void SizeChanged(const gfx::Size& size) = 0;
@@ skipping 21 matching lines @@
   // events on the responder chain.
   virtual NSObject<RenderWidgetHostViewMacDelegate>*
       CreateRenderWidgetHostViewDelegate(
           RenderWidgetHost* render_widget_host) = 0;
 #endif
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_WIN_DELEGATE_H_