Chromecast buildfix: content::KeySystemsInfo moved to media namespace.

chromecast/renderer/cast_content_renderer_client.h

 // Copyright 2014 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 CHROMECAST_RENDERER_CAST_CONTENT_RENDERER_CLIENT_H_
 #define CHROMECAST_RENDERER_CAST_CONTENT_RENDERER_CLIENT_H_
 
 #include "content/public/renderer/content_renderer_client.h"
 
 namespace chromecast {
 namespace shell {
 
 class CastContentRendererClient : public content::ContentRendererClient {
  public:
   CastContentRendererClient() {}
   virtual ~CastContentRendererClient() {}
 
   // ContentRendererClient implementation:
   virtual void RenderThreadStarted() override;
   virtual void RenderViewCreated(content::RenderView* render_view) override;
   virtual void AddKeySystems(
-      std::vector<content::KeySystemInfo>* key_systems) override;
+      std::vector< ::media::KeySystemInfo>* key_systems) override;
 };
 
 }  // namespace shell
 }  // namespace chromecast
 
 #endif  // CHROMECAST_RENDERER_CAST_CONTENT_RENDERER_CLIENT_H_