Mac fullscreen low power: Add layout interactions and flag

chrome/browser/ui/cocoa/browser_window_controller.h

Index: chrome/browser/ui/cocoa/browser_window_controller.h
diff --git a/chrome/browser/ui/cocoa/browser_window_controller.h b/chrome/browser/ui/cocoa/browser_window_controller.h
index a61a2e8cde160c63ba7455c7b04d5f212473c474..1c370554fd43b09e432a8447bbc7a24ac25315ef 100644
--- a/chrome/browser/ui/cocoa/browser_window_controller.h
+++ b/chrome/browser/ui/cocoa/browser_window_controller.h
@@ -44,6 +44,7 @@ class ExclusiveAccessContext;
 @class FindBarCocoaController;
 @class FullscreenModeController;
 @class FullscreenWindow;
+class FullscreenLowPowerCoordinatorCocoa;
 @class InfoBarContainerController;
 class LocationBarViewMac;
 @class OverlayableContentsController;
@@ -88,6 +89,8 @@ class Command;
   std::unique_ptr<ExclusiveAccessController> exclusiveAccessController_;
   base::scoped_nsobject<BrowserWindowFullscreenTransition>
       fullscreenTransition_;
+  std::unique_ptr<FullscreenLowPowerCoordinatorCocoa>
+      fullscreenLowPowerCoordinator_;
 
   // Strong. StatusBubble is a special case of a strong reference that
   // we don't wrap in a scoped_ptr because it is acting the same