Polish Tabstrip and Overlay Issues in Fullscreen

chrome/browser/ui/cocoa/constrained_window/constrained_window_sheet_controller.h

Index: chrome/browser/ui/cocoa/constrained_window/constrained_window_sheet_controller.h
diff --git a/chrome/browser/ui/cocoa/constrained_window/constrained_window_sheet_controller.h b/chrome/browser/ui/cocoa/constrained_window/constrained_window_sheet_controller.h
index b299d6b395ea8c5d7bc8bd243782baeec75928d9..bd6da1f027bf290374a0f8b3b323cdc68bc4f5dc 100644
--- a/chrome/browser/ui/cocoa/constrained_window/constrained_window_sheet_controller.h
+++ b/chrome/browser/ui/cocoa/constrained_window/constrained_window_sheet_controller.h
@@ -28,6 +28,10 @@ class WebContentsModalDialogHostCocoa;
   base::scoped_nsobject<NSWindow> parentWindow_;
   base::scoped_nsobject<NSView> activeView_;
 
+  // Flag to prevent the sheet from updating its position if it's hidden during
+  // fullscreen. Otherwise, we will get janky movements during the animation.
+  BOOL isSheetHiddenForFullscreen_;
+
   // Class that bridges the cross-platform web_modal APIs to the Cocoa sheet
   // controller.
   scoped_ptr<WebContentsModalDialogHostCocoa> dialogHost_;
@@ -57,6 +61,13 @@ class WebContentsModalDialogHostCocoa;
 // Hides a sheet over the active view.
 - (void)hideSheet;
 
+// Hides and unhides the sheet at the beginning and end of fullscreen
+// transition. |hideSheetForFullscreenTransition| gets called at the beginning
+// of the transition and |unhideSheetForFullscreenTransition| gets called at
+// the end.
+- (void)hideSheetForFullscreenTransition;
+- (void)unhideSheetForFullscreenTransition;
+
 // Calculates the position of the sheet for the given window size.
 - (NSPoint)originForSheet:(id<ConstrainedWindowSheet>)sheet
            withWindowSize:(NSSize)size;