Add the UMA metric Memory.Gpu.PhysicalFootprint.MacOS

chrome/browser/metrics/metrics_memory_details.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/metrics/metrics_memory_details.h"
 
 #include <stddef.h>
 
 #include <vector>
 
 #include "base/location.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "components/nacl/common/nacl_process_type.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/common/content_constants.h"
 #include "content/public/common/process_type.h"
 #include "ppapi/features/features.h"
 
+#if defined(OS_MACOSX)
+#include "base/mac/mac_util.h"
+#endif
+
 MemoryGrowthTracker::MemoryGrowthTracker() {
 }
 
 MemoryGrowthTracker::~MemoryGrowthTracker() {
 }
 
 bool MemoryGrowthTracker::UpdateSample(base::ProcessId pid,
                                        int sample,
                                        int* diff) {
   // |sample| is memory usage in kB.
@@ skipping 131 matching lines @@
         continue;
       case content::PROCESS_TYPE_SANDBOX_HELPER:
         UMA_HISTOGRAM_MEMORY_KB("Memory.SandboxHelper", sample);
         if (num_open_fds != -1) {
           UMA_HISTOGRAM_COUNTS_10000("Memory.SandboxHelper.OpenFDs",
                                      num_open_fds);
         }
         other_count++;
         continue;
       case content::PROCESS_TYPE_GPU:
+#if defined(OS_MACOSX)
+        // Physical footprint was introduced in macOS 10.11.
+        if (base::mac::IsAtLeastOS10_11()) {
+          UMA_HISTOGRAM_MEMORY_LARGE_MB(
+              "Memory.Gpu.PhysicalFootprint.MacOS",
+              browser.processes[index].phys_footprint / 1024 / 1024);
+        }
+#endif
         UMA_HISTOGRAM_MEMORY_KB("Memory.Gpu", sample);
         if (num_open_fds != -1 && open_fds_soft_limit != -1) {
           UMA_HISTOGRAM_COUNTS_10000("Memory.Gpu.OpenFDs", num_open_fds);
           UMA_HISTOGRAM_COUNTS_10000("Memory.Gpu.OpenFDsSoftLimit",
                                      open_fds_soft_limit);
         }
         other_count++;
         continue;
 #if BUILDFLAG(ENABLE_PLUGINS)
       case content::PROCESS_TYPE_PPAPI_PLUGIN: {
@@ skipping 185 matching lines @@
         memory_growth_tracker_->UpdateSample(process_entry.pid, sample,
                                              &diff) &&
         generate_histograms_) {
       if (diff < 0)
         UMA_HISTOGRAM_MEMORY_KB("Memory.RendererShrinkIn30Min", -diff);
       else
         UMA_HISTOGRAM_MEMORY_KB("Memory.RendererGrowthIn30Min", diff);
     }
   }
 }