Mac: Fix missing focus rings on toolbar, profile, and tab buttons

chrome/browser/ui/cocoa/hover_close_button.mm

Index: chrome/browser/ui/cocoa/hover_close_button.mm
diff --git a/chrome/browser/ui/cocoa/hover_close_button.mm b/chrome/browser/ui/cocoa/hover_close_button.mm
index cd767a84bde7759d0f37140e049e426a3c996668..be82dc52a8a71f22519de5974abb0d40df08b6f1 100644
--- a/chrome/browser/ui/cocoa/hover_close_button.mm
+++ b/chrome/browser/ui/cocoa/hover_close_button.mm
@@ -96,14 +96,6 @@ NSString* const kFadeOutValueKeyPath = @"fadeOutValue";
 
   switch(self.hoverState) {
     case kHoverStateMouseOver:
-      [image drawInRect:destRect
-               fromRect:imageRect
-              operation:NSCompositeSourceOver
-               fraction:1.0
-         respectFlipped:YES
-                  hints:nil];
-      break;
-
     case kHoverStateMouseDown:
       [image drawInRect:destRect
                fromRect:imageRect
@@ -140,6 +132,12 @@ NSString* const kFadeOutValueKeyPath = @"fadeOutValue";
   }
 }
 
+- (void)drawFocusRingMask {
+  // Match the hover image's shape.
+  NSRect circleRect = NSInsetRect([self bounds], 2, 2);
+  [[NSBezierPath bezierPathWithOvalInRect:circleRect] fill];
+}
+
 - (void)setFadeOutValue:(CGFloat)value {
   [self setNeedsDisplay];
 }