[Mac] Drop shadow for Omnibox popup.

chrome/browser/cocoa/toolbar_controller.mm

Index: chrome/browser/cocoa/toolbar_controller.mm
diff --git a/chrome/browser/cocoa/toolbar_controller.mm b/chrome/browser/cocoa/toolbar_controller.mm
index f3c7b136d70bcd3dd5444f09f3d8316ae7f4ad6b..c1b66b4114057d5ff4f920c20d8852f20f89a9d2 100644
--- a/chrome/browser/cocoa/toolbar_controller.mm
+++ b/chrome/browser/cocoa/toolbar_controller.mm
@@ -446,14 +446,15 @@ class PrefObserverBridge : public NotificationObserver {
   // The popup should span from the left edge of the star button to the right
   // edge of the go button.  The returned height is ignored.
   NSRect locationFrame = [locationBar_ frame];
-  int minX = NSMinX([starButton_ frame]);
-  int maxX = NSMaxX([goButton_ frame]);
+  // TODO(shess): The buttons have an extra 2 pixels between the edge
+  // of the visual button and the edge of the logical button.  This
+  // seems wrong.
+  int minX = NSMinX([starButton_ frame]) + 2.0;
+  int maxX = NSMaxX([goButton_ frame]) - 2.0;
   DCHECK(minX < NSMinX(locationFrame));
   DCHECK(maxX > NSMaxX(locationFrame));
 
-  // TODO(shess): The + 1.0 is because the field's visual boundary
-  // differs from its on-screen boundary.
-  NSRect r = NSMakeRect(minX, NSMinY(locationFrame) + 1.0, maxX - minX, 0);
+  NSRect r = NSMakeRect(minX, NSMinY(locationFrame), maxX - minX, 0);
   return gfx::Rect(NSRectToCGRect([[self view] convertRect:r toView:nil]));
 }
 @end