Shrink the minimum height of the message center

ui/message_center/message_center_style.h

Index: ui/message_center/message_center_style.h
diff --git a/ui/message_center/message_center_style.h b/ui/message_center/message_center_style.h
index 5516fcec436a76fa89bbd0bf6e00538feac30dce..73530fb35b58a6ac846477dfb0cdfbe83ca42909 100644
--- a/ui/message_center/message_center_style.h
+++ b/ui/message_center/message_center_style.h
@@ -32,7 +32,7 @@ const size_t kMaxVisiblePopupNotifications = 3;
 
 // DIP dimension; H size of the whole card.
 const int kNotificationWidth = 360;
-const int kMinScrollViewHeight = 100;
+const int kMinScrollViewHeight = 77;
 
 // Colors.
 const SkColor kMessageCenterBorderColor = SkColorSetRGB(0xC7, 0xCA, 0xCE);