Add StateOn{Moderate,Critical}NotificationReceived metrics

content/browser/browser_main_loop.cc

 // Copyright (c) 2012 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 "content/browser/browser_main_loop.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <utility>
@@ skipping 332 matching lines @@
   ALLOW_UNUSED_LOCAL(inhibit_comdat);
   thread.reset();
 }
 
 MSVC_POP_WARNING()
 MSVC_ENABLE_OPTIMIZE();
 
 #if defined(OS_WIN)
 // Creates a memory pressure monitor using automatic thresholds, or those
 // specified on the command-line. Ownership is passed to the caller.
-base::win::MemoryPressureMonitor* CreateWinMemoryPressureMonitor(
-    const base::CommandLine& parsed_command_line) {
-  std::vector<std::string> thresholds = base::SplitString(
-      parsed_command_line.GetSwitchValueASCII(
-          switches::kMemoryPressureThresholdsMb),
-      ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
+std::unique_ptr<base::win::MemoryPressureMonitor>
+CreateWinMemoryPressureMonitor(const base::CommandLine& parsed_command_line) {
+  std::vector<std::string> thresholds =
+      base::SplitString(parsed_command_line.GetSwitchValueASCII(
+                            switches::kMemoryPressureThresholdsMb),
+                        ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
 
   int moderate_threshold_mb = 0;
   int critical_threshold_mb = 0;
   if (thresholds.size() == 2 &&
       base::StringToInt(thresholds[0], &moderate_threshold_mb) &&
       base::StringToInt(thresholds[1], &critical_threshold_mb) &&
       moderate_threshold_mb >= critical_threshold_mb &&
       critical_threshold_mb >= 0) {
-    return new base::win::MemoryPressureMonitor(moderate_threshold_mb,
-                                                critical_threshold_mb);
+    return base::MakeUnique<base::win::MemoryPressureMonitor>(
+        moderate_threshold_mb, critical_threshold_mb);
   }
 
   // In absence of valid switches use the automatic defaults.
-  return new base::win::MemoryPressureMonitor();
+  return base::MakeUnique<base::win::MemoryPressureMonitor>();
 }
 #endif  // defined(OS_WIN)
 
 }  // namespace
 
 #if defined(USE_X11) && !defined(OS_CHROMEOS)
 namespace internal {
 
 // Forwards GPUInfo updates to ui::XVisualManager
 class GpuDataManagerVisualProxy : public GpuDataManagerObserver {
@@ skipping 1009 matching lines @@
 
   return result_code_;
 }
 
 bool BrowserMainLoop::UsingInProcessGpu() const {
   return parsed_command_line_.HasSwitch(switches::kSingleProcess) ||
          parsed_command_line_.HasSwitch(switches::kInProcessGPU);
 }
 
 void BrowserMainLoop::InitializeMemoryManagementComponent() {
+  // TODO(chrisha): Abstract away this construction mess to a helper function,
+  // once MemoryPressureMonitor is made a concrete class.
+#if defined(OS_CHROMEOS)
+  if (chromeos::switches::MemoryPressureHandlingEnabled()) {
+    memory_pressure_monitor_ =
+        base::MakeUnique<base::chromeos::MemoryPressureMonitor>
+            chromeos::switches::GetMemoryPressureThresholds());
+  }
+#elif defined(OS_MACOSX)
+  memory_pressure_monitor_ =
+    base::MakeUnique<base::mac::MemoryPressureMonitor>();
+#elif defined(OS_WIN)
+  memory_pressure_monitor_ =
+      std::move(CreateWinMemoryPressureMonitor(parsed_command_line_));
+#endif
+
   if (base::FeatureList::IsEnabled(features::kMemoryCoordinator)) {
     // Disable MemoryPressureListener when memory coordinator is enabled.
     base::MemoryPressureListener::SetNotificationsSuppressed(true);
     // base::Unretained is safe because the lifetime of MemoryCoordinator is
     // tied to the lifetime of the browser process.
     base::MemoryCoordinatorProxy::GetInstance()->
         SetGetCurrentMemoryStateCallback(base::Bind(
             &MemoryCoordinator::GetCurrentMemoryState,
             base::Unretained(MemoryCoordinator::GetInstance())));
     base::MemoryCoordinatorProxy::GetInstance()->
         SetSetCurrentMemoryStateForTestingCallback(base::Bind(
             &MemoryCoordinator::SetCurrentMemoryStateForTesting,
             base::Unretained(MemoryCoordinator::GetInstance())));
-    return;
+
+    if (memory_pressure_monitor_) {
+      memory_pressure_monitor_->SetDispatchCallback(
+          base::Bind(&MemoryCoordinator::RecordMemoryPressure,
+                     base::Unretained(MemoryCoordinator::GetInstance())));
+    }
   }
-
-  // TODO(chrisha): Abstract away this construction mess to a helper function,
-  // once MemoryPressureMonitor is made a concrete class.
-#if defined(OS_CHROMEOS)
-  if (chromeos::switches::MemoryPressureHandlingEnabled()) {
-    memory_pressure_monitor_.reset(new base::chromeos::MemoryPressureMonitor(
-        chromeos::switches::GetMemoryPressureThresholds()));
-  }
-#elif defined(OS_MACOSX)
-  memory_pressure_monitor_.reset(new base::mac::MemoryPressureMonitor());
-#elif defined(OS_WIN)
-  memory_pressure_monitor_.reset(CreateWinMemoryPressureMonitor(
-      parsed_command_line_));
-#endif
 }
 
 bool BrowserMainLoop::InitializeToolkit() {
   TRACE_EVENT0("startup", "BrowserMainLoop::InitializeToolkit");
 
   // TODO(evan): this function is rather subtle, due to the variety
   // of intersecting ifdefs we have.  To keep it easy to follow, there
   // are no #else branches on any #ifs.
   // TODO(stevenjb): Move platform specific code into platform specific Parts
   // (Need to add InitializeToolkit stage to BrowserParts).
@@ skipping 158 matching lines @@
     scoped_refptr<base::SingleThreadTaskRunner> worker_task_runner =
         audio_thread_->task_runner();
     audio_manager_ = media::AudioManager::Create(std::move(audio_task_runner),
                                                  std::move(worker_task_runner),
                                                  MediaInternals::GetInstance());
   }
   CHECK(audio_manager_);
 }
 
 }  // namespace content