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

chrome/browser/memory/system_memory_stats_recorder_chromeos.cc

 // 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.
 
-#include "chrome/browser/chromeos/memory/system_memory_stats_recorder.h"
+#include "chrome/browser/memory/system_memory_stats_recorder.h"
 
 #include "base/metrics/histogram_macros.h"
 #include "base/process/process_metrics.h"
 
+namespace memory {
+
 // Record a size in megabytes, over a potential interval up to 32 GB.
 #define UMA_HISTOGRAM_AVAILABLE_MEGABYTES(name, sample) \
   UMA_HISTOGRAM_CUSTOM_COUNTS(name, sample, 1, 32768, 50)
 
 // Record a size in megabytes, a potential interval from 250MB up to
 // 32 GB.
 #define UMA_HISTOGRAM_ALLOCATED_MEGABYTES(name, sample) \
   UMA_HISTOGRAM_CUSTOM_COUNTS(name, sample, 250, 32768, 50)
 
 // Records a statistics |sample| for UMA histogram |name|
 // using a linear distribution of buckets.
 #define UMA_HISTOGRAM_LINEAR(name, sample, max, buckets)                       \
   STATIC_HISTOGRAM_POINTER_BLOCK(                                              \
       name, Add(sample),                                                       \
       base::LinearHistogram::FactoryGet(                                       \
           name,                                                                \
           1, /* Minimum. The 0 bin for underflow is automatically added. */    \
           max + 1,     /* Ensure bucket size of |maximum| / |bucket_count|. */ \
           buckets + 2, /*  Account for the underflow and overflow bins. */     \
           base::Histogram::kUmaTargetedHistogramFlag))
 
 #define UMA_HISTOGRAM_MEGABYTES_LINEAR(name, sample) \
   UMA_HISTOGRAM_LINEAR(name, sample, 2500, 50)
 
-namespace chromeos {
-
 void RecordMemoryStats(RecordMemoryStatsType type) {
   base::SystemMemoryInfoKB memory;
   if (!base::GetSystemMemoryInfo(&memory))
     return;
   // Record graphics GEM object size in a histogram with 50 MB buckets.
   int mem_graphics_gem_mb = 0;
   if (memory.gem_size != -1)
     mem_graphics_gem_mb = memory.gem_size / 1024 / 1024;
 
   // Record shared memory (used by renderer/GPU buffers).
@@ skipping 38 matching lines @@
                                      mem_shmem_mb);
       UMA_HISTOGRAM_ALLOCATED_MEGABYTES(
           "Memory.OOMKill.Extensions.MemAllocatedMB", mem_allocated_mb);
       UMA_HISTOGRAM_AVAILABLE_MEGABYTES(
           "Memory.OOMKill.Extensions.MemAvailableMB", mem_available_mb);
       break;
     }
   }
 }
 
-}  // namespace chromeos
+}  // namespace memory