[DevTools] Extract small-bubble component.

third_party/WebKit/Source/devtools/devtools.gypi

 #
 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #         * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #         * Redistributions in binary form must reproduce the above
@@ skipping 242 matching lines @@
             'front_end/ui/inspectorSyntaxHighlightDark.css',
             'front_end/ui/inspectorViewTabbedPane.css',
             'front_end/ui/listWidget.css',
             'front_end/ui/panelEnablerView.css',
             'front_end/ui/popover.css',
             'front_end/ui/progressIndicator.css',
             'front_end/ui/radioButton.css',
             'front_end/ui/reportView.css',
             'front_end/ui/searchableView.css',
             'front_end/ui/softContextMenu.css',
+            'front_end/ui/smallBubble.css',
             'front_end/ui/smallIcon.css',
             'front_end/ui/splitWidget.css',
             'front_end/ui/toolbar.css',
             'front_end/ui/tooltip.css',
             'front_end/ui/suggestBox.css',
             'front_end/ui/tabbedPane.css',
             'front_end/ui/textButton.css',
             'front_end/ui/textPrompt.css',
             'front_end/ui/treeoutline.css',
             'front_end/ui/viewContainers.css',
@@ skipping 625 matching lines @@
             'front_end/Images/toolbarResizerVertical.png',
             'front_end/Images/toolbarItemSelected.png',
             'front_end/Images/touchCursor.png',
             'front_end/Images/touchCursor_2x.png',
         ],
         'devtools_extension_api_files': [
             'front_end/extensions/ExtensionAPI.js',
         ],
     },
 }