[Mac] Misc fixes for the new avatar bubble

chrome/browser/ui/cocoa/base_bubble_controller.mm

Index: chrome/browser/ui/cocoa/base_bubble_controller.mm
diff --git a/chrome/browser/ui/cocoa/base_bubble_controller.mm b/chrome/browser/ui/cocoa/base_bubble_controller.mm
index fd19a0d65663ef6af155f4755959d29121d8daa2..20336945daaa79309cd036e7def5b0f44219ee5f 100644
--- a/chrome/browser/ui/cocoa/base_bubble_controller.mm
+++ b/chrome/browser/ui/cocoa/base_bubble_controller.mm
@@ -148,7 +148,7 @@
   anchorOffset_.y -= anchor_.y;
 }
 
-- (NSBox*)separatorWithFrame:(NSRect)frame {
+- (NSBox*)horizontalSeparatorWithFrame:(NSRect)frame {
   frame.size.height = 1.0;
   base::scoped_nsobject<NSBox> spacer([[NSBox alloc] initWithFrame:frame]);
   [spacer setBoxType:NSBoxSeparator];
@@ -157,6 +157,15 @@
   return [spacer.release() autorelease];
 }
 
+- (NSBox*)verticalSeparatorWithFrame:(NSRect)frame {
+  frame.size.width = 1.0;
+  base::scoped_nsobject<NSBox> spacer([[NSBox alloc] initWithFrame:frame]);
+  [spacer setBoxType:NSBoxSeparator];
+  [spacer setBorderType:NSLineBorder];
+  [spacer setAlphaValue:0.2];
+  return [spacer.release() autorelease];
+}
+
 - (void)parentWindowDidResize:(NSNotification*)notification {
   if (!parentWindow_)
     return;