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

content/browser/renderer_host/render_widget_host_impl.h

Index: content/browser/renderer_host/render_widget_host_impl.h
diff --git a/content/browser/renderer_host/render_widget_host_impl.h b/content/browser/renderer_host/render_widget_host_impl.h
index a957311fed507a0a3065ca018fac5c8ca84be093..502fc12606b73566eeff2fae04e399a17b497d54 100644
--- a/content/browser/renderer_host/render_widget_host_impl.h
+++ b/content/browser/renderer_host/render_widget_host_impl.h
@@ -68,6 +68,12 @@ namespace cc {
 class CompositorFrameAck;
 }
 
+#if defined(OS_MACOSX)
+namespace device {
+class PowerSaveBlocker;
+}  // namespace device
+#endif
+
 namespace gfx {
 class Range;
 }
@@ -87,10 +93,6 @@ struct EditCommand;
 struct ResizeParams;
 struct TextInputState;
 
-#if defined(OS_MACOSX)
-class PowerSaveBlocker;
-#endif
-
 // This implements the RenderWidgetHost interface that is exposed to
 // embedders of content, and adds things only visible to content.
 class CONTENT_EXPORT RenderWidgetHostImpl : public RenderWidgetHost,
@@ -829,7 +831,7 @@ class CONTENT_EXPORT RenderWidgetHostImpl : public RenderWidgetHost,
   base::TimeDelta new_content_rendering_delay_;
 
 #if defined(OS_MACOSX)
-  std::unique_ptr<PowerSaveBlocker> power_save_blocker_;
+  std::unique_ptr<device::PowerSaveBlocker> power_save_blocker_;
 #endif
 
   base::WeakPtrFactory<RenderWidgetHostImpl> weak_factory_;