New custom styling for action box menu on Os X.

chrome/browser/ui/cocoa/info_bubble_view.mm

Index: chrome/browser/ui/cocoa/info_bubble_view.mm
diff --git a/chrome/browser/ui/cocoa/info_bubble_view.mm b/chrome/browser/ui/cocoa/info_bubble_view.mm
index b5b9ce8f8867a472ddf231ee02e5f04765e0c953..e5be040e7d6aa89e1bf6bbfeb7ce88f394f33d1c 100644
--- a/chrome/browser/ui/cocoa/info_bubble_view.mm
+++ b/chrome/browser/ui/cocoa/info_bubble_view.mm
@@ -19,6 +19,7 @@
     arrowLocation_ = info_bubble::kTopLeft;
     alignment_ = info_bubble::kAlignArrowToAnchor;
     cornerFlags_ = info_bubble::kRoundedAllCorners;
+    backgroundColor_.reset([[NSColor whiteColor] retain]);
   }
   return self;
 }
@@ -71,7 +72,7 @@
   [bezier lineToPoint:NSMakePoint(arrowStart.x + info_bubble::kBubbleArrowWidth,
                                   arrowStart.y)];
   [bezier closePath];
-  [[NSColor whiteColor] set];
+  [backgroundColor_ set];
   [bezier fill];
 }
 
@@ -86,4 +87,12 @@
   return arrowTip;
 }
 
+- (NSColor*)backgroundColor {
+  return backgroundColor_;
+}
+
+- (void)setBackgroundColor:(NSColor*)backgroundColor {
+  backgroundColor_.reset([backgroundColor retain]);
+}
+
 @end