Use PowerSaveBlocker for audio and video on Chrome OS.

content/browser/media/capture/desktop_capture_device.cc

 // Copyright (c) 2013 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/media/capture/desktop_capture_device.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
@@ skipping 156 matching lines @@
   DCHECK(!client_.get());
 
   client_ = client.Pass();
   requested_params_ = params;
 
   capture_format_ = requested_params_.requested_format;
 
   // This capturer always outputs ARGB, non-interlaced.
   capture_format_.pixel_format = media::PIXEL_FORMAT_ARGB;
 
-  power_save_blocker_.reset(PowerSaveBlocker::Create(
-      PowerSaveBlocker::kPowerSaveBlockPreventDisplaySleep,
-      "DesktopCaptureDevice is running").release());
+  power_save_blocker_.reset(
+      PowerSaveBlocker::Create(
+          PowerSaveBlocker::kPowerSaveBlockPreventDisplaySleep,
+          PowerSaveBlocker::kReasonOther,
+          "DesktopCaptureDevice is running").release());
 
   desktop_capturer_->Start(this);
 
   CaptureFrameAndScheduleNext();
 }
 
 void DesktopCaptureDevice::Core::SetNotificationWindowId(
     gfx::NativeViewId window_id) {
   DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK(window_id);
@@ skipping 296 matching lines @@
 #else
   base::MessageLoop::Type thread_type = base::MessageLoop::TYPE_DEFAULT;
 #endif
 
   thread_.StartWithOptions(base::Thread::Options(thread_type, 0));
 
   core_.reset(new Core(thread_.task_runner(), capturer.Pass(), type));
 }
 
 }  // namespace content