[MemoryPressure] Move chrome/browser/chromeos/* to chrome/browser/memory/*.

chrome/browser/memory/oom_memory_details.h

 // Copyright 2015 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_BROWSER_CHROMEOS_MEMORY_OOM_MEMORY_DETAILS_H_
-#define CHROME_BROWSER_CHROMEOS_MEMORY_OOM_MEMORY_DETAILS_H_
+#ifndef CHROME_BROWSER_MEMORY_OOM_MEMORY_DETAILS_H_
+#define CHROME_BROWSER_MEMORY_OOM_MEMORY_DETAILS_H_
 
 #include <string>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/time/time.h"
 #include "chrome/browser/memory_details.h"
 
-namespace chromeos {
+namespace memory {
 
 ////////////////////////////////////////////////////////////////////////////////
 // OomMemoryDetails logs details about all Chrome processes during an out-of-
 // memory event in an attempt to identify the culprit.
 class OomMemoryDetails : public MemoryDetails {
  public:
   // Logs the memory details asynchronously and then run |callback|.
   // The |title| is printed at the beginning of the message.
   static void Log(const std::string& title, const base::Closure& callback);
 
  private:
   OomMemoryDetails(const std::string& title, const base::Closure& callback);
   ~OomMemoryDetails() override;
 
   // MemoryDetails overrides:
   void OnDetailsAvailable() override;
 
   std::string title_;
   base::TimeTicks start_time_;
   base::Closure callback_;
 
   DISALLOW_COPY_AND_ASSIGN(OomMemoryDetails);
 };
 
-}  // namespace chromeos
+}  // namespace memory
 
-#endif  // CHROME_BROWSER_CHROMEOS_MEMORY_OOM_MEMORY_DETAILS_H_
+#endif  // CHROME_BROWSER_MEMORY_OOM_MEMORY_DETAILS_H_