Revert of [Mac] Fix rough-looking profile picker text, especially with a dark theme.

chrome/browser/ui/cocoa/browser_window_fullscreen_transition.mm

Index: chrome/browser/ui/cocoa/browser_window_fullscreen_transition.mm
diff --git a/chrome/browser/ui/cocoa/browser_window_fullscreen_transition.mm b/chrome/browser/ui/cocoa/browser_window_fullscreen_transition.mm
index 43d28e1a25f315d7a26df76d7a43175453f67943..2855e87e91def96915e21aa82b3c0eceb4f9c9e3 100644
--- a/chrome/browser/ui/cocoa/browser_window_fullscreen_transition.mm
+++ b/chrome/browser/ui/cocoa/browser_window_fullscreen_transition.mm
@@ -54,6 +54,40 @@
 
 }  // namespace
 
+// This view draws a dummy toolbar over the resized content view during
+// the exit fullscreen animation. It is removed at the end of the animation.
+@interface FullscreenTabStripBackgroundView : NSView {
+  base::scoped_nsobject<NSColor> windowBackgroundColor_;
+}
+
+- (instancetype)initWithFrame:(NSRect)frame background:(NSColor*)color;
+
+@end
+
+@implementation FullscreenTabStripBackgroundView
+
+- (instancetype)initWithFrame:(NSRect)frame background:(NSColor*)color {
+  if ((self = [super initWithFrame:frame])) {
+    windowBackgroundColor_.reset([color copy]);
+  }
+  return self;
+}
+
+// Override this method so that we can paint the toolbar in this view.
+// This method first fill itself with the toolbar's background. After that,
+// it will paint the window's theme if applicable.
+- (void)drawRect:(NSRect)frame {
+  [windowBackgroundColor_ set];
+  NSRectFillUsingOperation(frame, NSCompositeDestinationOver);
+
+  [FramedBrowserWindow drawWindowThemeInDirtyRect:frame
+                                          forView:self
+                                           bounds:[self bounds]
+                             forceBlackBackground:NO];
+}
+
+@end
+
 @interface BrowserWindowFullscreenTransition ()
     <CAAnimationDelegate, CALayerDelegate> {
   // Flag to keep track of whether we are entering or exiting fullscreen.
@@ -100,7 +134,7 @@
   NSRect finalFrame_;
 
   // This view draws the tabstrip background during the exit animation.
-  base::scoped_nsobject<TabStripBackgroundView>
+  base::scoped_nsobject<FullscreenTabStripBackgroundView>
       fullscreenTabStripBackgroundView_;
 
   // Locks and unlocks the FullSizeContentWindow.
@@ -328,7 +362,9 @@
     [primaryWindow_ forceContentViewFrame:relativeContentFinalFrame];
 
     fullscreenTabStripBackgroundView_.reset(
-        [[TabStripBackgroundView alloc] initWithFrame:finalFrame_]);
+        [[FullscreenTabStripBackgroundView alloc]
+            initWithFrame:finalFrame_
+               background:primaryWindowInitialBackgroundColor_]);
     [fullscreenTabStripBackgroundView_ setFrameOrigin:NSZeroPoint];
     [contentView addSubview:fullscreenTabStripBackgroundView_.get()
                  positioned:NSWindowBelow