Add experimental private memory footprint metrics.

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>
 
@@ skipping 90 matching lines @@
     switch (browser.processes[index].process_type) {
       case content::PROCESS_TYPE_BROWSER:
         UMA_HISTOGRAM_MEMORY_LARGE_MB("Memory.Browser.Large2", sample / 1024);
         UMA_HISTOGRAM_MEMORY_LARGE_MB("Memory.Browser.Committed",
                                       committed / 1024);
         if (num_open_fds != -1 && open_fds_soft_limit != -1) {
           UMA_HISTOGRAM_COUNTS_10000("Memory.Browser.OpenFDs", num_open_fds);
           UMA_HISTOGRAM_COUNTS_10000("Memory.Browser.OpenFDsSoftLimit",
                                      open_fds_soft_limit);
         }
+#if defined(OS_MACOSX)
+        UMA_HISTOGRAM_MEMORY_LARGE_MB(
+            "Memory.Experimental.Browser.PrivateMemoryFootprint.MacOS",
+            browser.processes[index].private_memory_footprint / 1024 / 1024);
+#endif
         continue;
       case content::PROCESS_TYPE_RENDERER: {
         UMA_HISTOGRAM_MEMORY_LARGE_MB("Memory.RendererAll", sample / 1024);
         UMA_HISTOGRAM_MEMORY_LARGE_MB("Memory.RendererAll.Committed",
                                       committed / 1024);
         if (num_open_fds != -1 && open_fds_soft_limit != -1) {
           UMA_HISTOGRAM_COUNTS_10000("Memory.RendererAll.OpenFDs",
                                      num_open_fds);
           UMA_HISTOGRAM_COUNTS_10000("Memory.RendererAll.OpenFDsSoftLimit",
                                      open_fds_soft_limit);
         }
         ProcessMemoryInformation::RendererProcessType renderer_type =
             browser.processes[index].renderer_type;
         switch (renderer_type) {
           case ProcessMemoryInformation::RENDERER_EXTENSION:
             UMA_HISTOGRAM_MEMORY_KB("Memory.Extension", sample);
             if (num_open_fds != -1) {
               UMA_HISTOGRAM_COUNTS_10000("Memory.Extension.OpenFDs",
                                          num_open_fds);
             }
             extension_count++;
+#if defined(OS_MACOSX)
+            UMA_HISTOGRAM_MEMORY_LARGE_MB(
+                "Memory.Experimental.Extension.PrivateMemoryFootprint.MacOS",
+                browser.processes[index].private_memory_footprint / 1024 /
+                    1024);
+#endif
             continue;
           case ProcessMemoryInformation::RENDERER_CHROME:
             UMA_HISTOGRAM_MEMORY_KB("Memory.Chrome", sample);
             if (num_open_fds != -1)
               UMA_HISTOGRAM_COUNTS_10000("Memory.Chrome.OpenFDs", num_open_fds);
             chrome_count++;
             continue;
           case ProcessMemoryInformation::RENDERER_UNKNOWN:
             NOTREACHED() << "Unknown renderer process type.";
             continue;
           case ProcessMemoryInformation::RENDERER_NORMAL:
           default:
+#if defined(OS_MACOSX)
+            UMA_HISTOGRAM_MEMORY_LARGE_MB(
+                "Memory.Experimental.Renderer.PrivateMemoryFootprint.MacOS",
+                browser.processes[index].private_memory_footprint / 1024 /
+                    1024);
+#endif
             // TODO(erikkay): Should we bother splitting out the other subtypes?
             UMA_HISTOGRAM_MEMORY_LARGE_MB("Memory.Renderer.Large2",
                                           sample / 1024);
             UMA_HISTOGRAM_MEMORY_LARGE_MB("Memory.Renderer.Committed",
                                           committed / 1024);
             if (num_open_fds != -1) {
               UMA_HISTOGRAM_COUNTS_10000("Memory.Renderer.OpenFDs",
                                          num_open_fds);
             }
             renderer_count++;
@@ skipping 21 matching lines @@
         other_count++;
         continue;
       case content::PROCESS_TYPE_GPU:
 #if defined(OS_MACOSX)
         // Physical footprint was introduced in macOS 10.12.
         if (base::mac::IsAtLeastOS10_12()) {
           UMA_HISTOGRAM_MEMORY_LARGE_MB(
               "Memory.Experimental.Gpu.PhysicalFootprint.MacOS",
               browser.processes[index].phys_footprint / 1024 / 1024);
         }
+        UMA_HISTOGRAM_MEMORY_LARGE_MB(
+            "Memory.Experimental.Gpu.PrivateMemoryFootprint.MacOS",
+            browser.processes[index].private_memory_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)
@@ skipping 186 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);
     }
   }
 }