Mac fullscreen low power: Ignore WasOccluded by low power window

ui/accelerated_widget_mac/accelerated_widget_mac.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_ACCELERATED_WIDGET_MAC_ACCELERATED_WIDGET_MAC_H_
 #define UI_ACCELERATED_WIDGET_MAC_ACCELERATED_WIDGET_MAC_H_
 
 #include <IOSurface/IOSurface.h>
 #include <vector>
 
@@ skipping 48 matching lines @@
 
   void SetNSView(AcceleratedWidgetMacNSView* view);
   void ResetNSView();
 
   // Fullscreen low power mode interface.
   void SetFullscreenLowPowerCoordinator(
       FullscreenLowPowerCoordinator* coordinator);
   void ResetFullscreenLowPowerCoordinator();
   CALayer* GetFullscreenLowPowerLayer() const;
 
+  // Returns true if the widget might be in fullscreen low power mode. This
+  // will return a conservative answer.
+  bool MightBeInFullscreenLowPowerMode() const;
+
   // Return true if the last frame swapped has a size in DIP of |dip_size|.
   bool HasFrameOfSize(const gfx::Size& dip_size) const;
 
   // Populate the vsync parameters for the surface's display.
   void GetVSyncParameters(
       base::TimeTicks* timebase, base::TimeDelta* interval) const;
 
   void GotFrame(CAContextID ca_context_id,
                 bool fullscreen_low_power_ca_context_valid,
                 CAContextID fullscreen_low_power_ca_context_id,
@@ skipping 63 matching lines @@
     CAContextID fullscreen_low_power_ca_context_id,
     base::ScopedCFTypeRef<IOSurfaceRef> io_surface,
     const gfx::Size& pixel_size,
     float scale_factor,
     base::TimeTicks* vsync_timebase,
     base::TimeDelta* vsync_interval);
 
 }  // namespace ui
 
 #endif  // UI_ACCELERATED_WIDGET_MAC_ACCELERATED_WIDGET_MAC_H_