Use PowerSaveBlocker for audio and video on Chrome OS.

content/browser/power_save_blocker_chromeos.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/power_save_blocker_impl.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "chromeos/dbus/power_policy_controller.h"
 #include "content/public/browser/browser_thread.h"
 
 namespace content {
 
+namespace {
+
+// Converts a PowerSaveBlocker::Reason to a
+// chromeos::PowerPolicyController::WakeLockReason.
+chromeos::PowerPolicyController::WakeLockReason GetWakeLockReason(
+    PowerSaveBlocker::Reason reason) {
+  switch (reason) {
+    case PowerSaveBlocker::kReasonAudioPlayback:
+      return chromeos::PowerPolicyController::REASON_AUDIO_PLAYBACK;
+    case PowerSaveBlocker::kReasonVideoPlayback:
+      return chromeos::PowerPolicyController::REASON_VIDEO_PLAYBACK;
+    case PowerSaveBlocker::kReasonOther:
+      return chromeos::PowerPolicyController::REASON_OTHER;
+  }
+  return chromeos::PowerPolicyController::REASON_OTHER;
+}
+
+}  // namespace
+
 class PowerSaveBlockerImpl::Delegate
     : public base::RefCountedThreadSafe<PowerSaveBlockerImpl::Delegate> {
  public:
-  Delegate(PowerSaveBlockerType type, const std::string& reason)
-      : type_(type),
-        reason_(reason),
-        block_id_(0) {}
+  Delegate(PowerSaveBlockerType type,
+           Reason reason,
+           const std::string& description)
+      : type_(type), reason_(reason), description_(description), block_id_(0) {}
 
   void ApplyBlock() {
     DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
     if (!chromeos::PowerPolicyController::IsInitialized())
       return;
 
     auto* controller = chromeos::PowerPolicyController::Get();
     switch (type_) {
       case kPowerSaveBlockPreventAppSuspension:
-        block_id_ = controller->AddSystemWakeLock(reason_);
+        block_id_ = controller->AddSystemWakeLock(GetWakeLockReason(reason_),
+                                                  description_);
         break;
       case kPowerSaveBlockPreventDisplaySleep:
-        block_id_ = controller->AddScreenWakeLock(reason_);
+        block_id_ = controller->AddScreenWakeLock(GetWakeLockReason(reason_),
+                                                  description_);
         break;
       default:
         NOTREACHED() << "Unhandled block type " << type_;
     }
   }
 
   void RemoveBlock() {
     DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
     if (!chromeos::PowerPolicyController::IsInitialized())
       return;
 
     chromeos::PowerPolicyController::Get()->RemoveWakeLock(block_id_);
   }
 
  private:
   friend class base::RefCountedThreadSafe<Delegate>;
   virtual ~Delegate() {}
 
   PowerSaveBlockerType type_;
-  std::string reason_;
+  Reason reason_;
+  std::string description_;
 
   // ID corresponding to the block request in PowerPolicyController.
   int block_id_;
 
   DISALLOW_COPY_AND_ASSIGN(Delegate);
 };
 
 PowerSaveBlockerImpl::PowerSaveBlockerImpl(PowerSaveBlockerType type,
-                                           const std::string& reason)
-    : delegate_(new Delegate(type, reason)) {
+                                           Reason reason,
+                                           const std::string& description)
+    : delegate_(new Delegate(type, reason, description)) {
   BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
                           base::Bind(&Delegate::ApplyBlock, delegate_));
 }
 
 PowerSaveBlockerImpl::~PowerSaveBlockerImpl() {
   BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
                           base::Bind(&Delegate::RemoveBlock, delegate_));
 }
 
 }  // namespace content