content/browser/loader/power_save_block_resource_throttle.cc

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/browser/loader/power_save_block_resource_throttle.h"
   6
   7 #include "base/profiler/scoped_tracker.h"
   8 #include "content/public/browser/power_save_blocker.h"
   9
  10 namespace content {
  11
  12 namespace {
  13
  14 const int kPowerSaveBlockDelaySeconds = 30;
  15
  16 }  // namespace
  17
  18 PowerSaveBlockResourceThrottle::PowerSaveBlockResourceThrottle() {
  19 }
  20
  21 PowerSaveBlockResourceThrottle::~PowerSaveBlockResourceThrottle() {
  22 }
  23
  24 void PowerSaveBlockResourceThrottle::WillStartRequest(bool* defer) {
  25   // Delay PowerSaveBlocker activation to dismiss small requests.
  26   timer_.Start(FROM_HERE,
  27                base::TimeDelta::FromSeconds(kPowerSaveBlockDelaySeconds),
  28                this,
  29                &PowerSaveBlockResourceThrottle::ActivatePowerSaveBlocker);
  30 }
  31
  32 void PowerSaveBlockResourceThrottle::WillProcessResponse(bool* defer) {
  33   // TODO(vadimt): Remove ScopedTracker below once crbug.com/422516 is fixed.
  34   tracked_objects::ScopedTracker tracking_profile(
  35       FROM_HERE_WITH_EXPLICIT_FUNCTION(
  36           "422516 PowerSaveBlockResourceThrottle::WillProcessResponse"));
  37
  38   // Stop blocking power save after request finishes.
  39   power_save_blocker_.reset();
  40   timer_.Stop();
  41 }
  42
  43 const char* PowerSaveBlockResourceThrottle::GetNameForLogging() const {
  44   return "PowerSaveBlockResourceThrottle";
  45 }
  46
  47 void PowerSaveBlockResourceThrottle::ActivatePowerSaveBlocker() {
  48   power_save_blocker_ = PowerSaveBlocker::Create(
  49       PowerSaveBlocker::kPowerSaveBlockPreventAppSuspension,
  50       PowerSaveBlocker::kReasonOther, "Uploading data");
  51 }
  52
  53 }  // namespace content