MacViews: Get chrome/browser/ui/views/frame to compile (reland)

chrome/browser/ui/views/frame/immersive_mode_controller.h

Index: chrome/browser/ui/views/frame/immersive_mode_controller.h
diff --git a/chrome/browser/ui/views/frame/immersive_mode_controller.h b/chrome/browser/ui/views/frame/immersive_mode_controller.h
index 6f24dddf14fd7c045ac1028e82382f149d8f3541..2e059f34ddece5fe89a4a912c41a0985c51839aa 100644
--- a/chrome/browser/ui/views/frame/immersive_mode_controller.h
+++ b/chrome/browser/ui/views/frame/immersive_mode_controller.h
@@ -5,7 +5,6 @@
 #ifndef CHROME_BROWSER_UI_VIEWS_FRAME_IMMERSIVE_MODE_CONTROLLER_H_
 #define CHROME_BROWSER_UI_VIEWS_FRAME_IMMERSIVE_MODE_CONTROLLER_H_
 
-#include "ash/wm/immersive_revealed_lock.h"
 #include "base/compiler_specific.h"
 #include "base/observer_list.h"
 #include "chrome/browser/ui/host_desktop.h"
@@ -17,7 +16,16 @@ class Rect;
 class Size;
 }
 
-typedef ash::ImmersiveRevealedLock ImmersiveRevealedLock;
+// A lock which will keep the top-of-window views revealed for its
+// lifetime.
+// See ImmersiveModeController::GetRevealedLock for details.
+class ImmersiveRevealedLock {
+ public:
+  virtual ~ImmersiveRevealedLock() {}
+
+ protected:
+  ImmersiveRevealedLock() {}
+};
 
 // Controller for an "immersive mode" similar to MacOS presentation mode where
 // the top-of-window views are hidden until the mouse hits the top of the
@@ -82,6 +90,7 @@ class ImmersiveModeController {
   // If acquiring the lock causes a reveal, the top-of-window views will animate
   // according to |animate_reveal|.
   // The caller takes ownership of the returned lock.
+  // This is currently only supported on Ash.
   virtual ImmersiveRevealedLock* GetRevealedLock(
       AnimateReveal animate_reveal) WARN_UNUSED_RESULT = 0;