Reland of 'Move content/browser/power_save_blocker to //device/power_save_blocker'

content/browser/loader/power_save_block_resource_throttle.h

Index: content/browser/loader/power_save_block_resource_throttle.h
diff --git a/content/browser/loader/power_save_block_resource_throttle.h b/content/browser/loader/power_save_block_resource_throttle.h
index 3f6f1d363d7209cfed9c5c0d8566e8c4996d74db..7e4b9baa1aee2bb37197085ff78ac2833354116d 100644
--- a/content/browser/loader/power_save_block_resource_throttle.h
+++ b/content/browser/loader/power_save_block_resource_throttle.h
@@ -13,9 +13,11 @@
 #include "base/timer/timer.h"
 #include "content/public/browser/resource_throttle.h"
 
-namespace content {
-
+namespace device {
 class PowerSaveBlocker;
+}  // namespace device
+
+namespace content {
 
 // This ResourceThrottle blocks power save until large upload request finishes.
 class PowerSaveBlockResourceThrottle : public ResourceThrottle {
@@ -33,7 +35,7 @@ class PowerSaveBlockResourceThrottle : public ResourceThrottle {
 
   const std::string host_;
   base::OneShotTimer timer_;
-  std::unique_ptr<PowerSaveBlocker> power_save_blocker_;
+  std::unique_ptr<device::PowerSaveBlocker> power_save_blocker_;
 
   DISALLOW_COPY_AND_ASSIGN(PowerSaveBlockResourceThrottle);
 };