[Mac] Fix for fullscreen toolbar

chrome/browser/ui/cocoa/browser_window_controller_private.mm

Index: chrome/browser/ui/cocoa/browser_window_controller_private.mm
diff --git a/chrome/browser/ui/cocoa/browser_window_controller_private.mm b/chrome/browser/ui/cocoa/browser_window_controller_private.mm
index 6bbb6d210f397861d7d4aa664cb132e646486e32..b3a12165fe142218f6348f879bac824a0bc7e857 100644
--- a/chrome/browser/ui/cocoa/browser_window_controller_private.mm
+++ b/chrome/browser/ui/cocoa/browser_window_controller_private.mm
@@ -460,8 +460,10 @@ willPositionSheet:(NSWindow*)sheet
   BOOL showDropdown =
       !fullscreenForTab && !kioskMode && ([self floatingBarHasFocus]);
 
+  NSView* contentView = [[self window] contentView];
   [fullscreenToolbarController_
-      setupFullscreenToolbarWithDropdown:showDropdown];
+      setupFullscreenToolbarForContentView:contentView
+                              showDropdown:showDropdown];
 }
 
 - (void)adjustUIForExitingFullscreenAndStopOmniboxSliding {
@@ -474,6 +476,10 @@ willPositionSheet:(NSWindow*)sheet
 }
 
 - (void)adjustUIForSlidingFullscreenStyle:(fullscreen_mac::SlidingStyle)style {
+  // The UI should only be adjusted in fullscreen mode.
+  if (![self isInAnyFullscreenMode])
+    return;
+
   if (!fullscreenToolbarController_) {
     fullscreenToolbarController_.reset(
         [self newFullscreenToolbarControllerWithStyle:style]);
@@ -1009,8 +1015,11 @@ willPositionSheet:(NSWindow*)sheet
 
   [self layoutTabContentArea:output.contentAreaFrame];
 
-  if (!NSIsEmptyRect(output.fullscreenBackingBarFrame))
+  if (!NSIsEmptyRect(output.fullscreenBackingBarFrame)) {
     [floatingBarBackingView_ setFrame:output.fullscreenBackingBarFrame];
+    [fullscreenToolbarController_
+        setTrackingAreaFromOverlayFrame:output.fullscreenBackingBarFrame];
+  }
 
   [findBarCocoaController_
       positionFindBarViewAtMaxY:output.findBarMaxY