Refactor BrowserProcessPlatformPart.

chrome/test/base/testing_browser_process_platform_part.h

 // Copyright (c) 2013 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 CHROME_TEST_BASE_TESTING_BROWSER_PROCESS_PLATFORM_PART_H_
 #define CHROME_TEST_BASE_TESTING_BROWSER_PROCESS_PLATFORM_PART_H_
 
-#if defined(OS_WIN) && defined(USE_AURA)
-#include "chrome/browser/browser_process_platform_part_aurawin.h"
-#else
 #include "chrome/browser/browser_process_platform_part.h"
-#endif
 
+// A TestingBrowserProcessPlatformPart is essentially a
+// BrowserProcessPlatformPart except it doesn't have an OomPriorityManager on
+// Chrome OS.
 class TestingBrowserProcessPlatformPart : public BrowserProcessPlatformPart {
  public:
   TestingBrowserProcessPlatformPart();
   virtual ~TestingBrowserProcessPlatformPart();
 
+#if defined(OS_CHROMEOS)
+  // Overridden from BrowserProcessPlatformPart:
+  virtual chromeos::OomPriorityManager* oom_priority_manager() OVERRIDE;
+#endif
+
  private:
   DISALLOW_COPY_AND_ASSIGN(TestingBrowserProcessPlatformPart);
 };
 
 #endif  // CHROME_TEST_BASE_TESTING_BROWSER_PROCESS_PLATFORM_PART_H_