Implement a salt for MediaSource IDs that can be cleared by a user.

content/public/test/mock_resource_context.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_TEST_MOCK_RESOURCE_CONTEXT_H_
 #define CONTENT_PUBLIC_TEST_MOCK_RESOURCE_CONTEXT_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 12 matching lines @@
   // Does not take ownership of |test_request_context|.
   explicit MockResourceContext(net::URLRequestContext* test_request_context);
 
   virtual ~MockResourceContext();
 
   // ResourceContext implementation:
   virtual net::HostResolver* GetHostResolver() OVERRIDE;
   virtual net::URLRequestContext* GetRequestContext() OVERRIDE;
   virtual bool AllowMicAccess(const GURL& origin) OVERRIDE;
   virtual bool AllowCameraAccess(const GURL& origin) OVERRIDE;
+  virtual std::string GetMediaDeviceIDSalt() OVERRIDE;
 
   //////////////////////////////////////////////////////////////////////////
   // The following functions are used by tests.
   void set_mic_access(bool mic_allowed) {
     mic_allowed_ = mic_allowed;
   }
 
   void set_camera_access(bool camera_allowed) {
     camera_allowed_ = camera_allowed;
   }
 
  private:
   net::URLRequestContext* test_request_context_;
 
   bool mic_allowed_;
   bool camera_allowed_;
 
   DISALLOW_COPY_AND_ASSIGN(MockResourceContext);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_TEST_MOCK_RESOURCE_CONTEXT_H_