DevTools: merge MemoryStatistics.js and CountersGraph.js, extract DOMCountersGraph.js

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 32 matching lines @@
             'front_end/CompilerScriptMapping.js',
             'front_end/CompletionDictionary.js',
             'front_end/ConsoleModel.js',
             'front_end/ContentProvider.js',
             'front_end/ContentProviderBasedProjectDelegate.js',
             'front_end/ContentProviders.js',
             'front_end/ContextMenu.js',
             'front_end/CookieItemsView.js',
             'front_end/CookieParser.js',
             'front_end/CookiesTable.js',
-            'front_end/CountersGraph.js',
             'front_end/CPUProfilerModel.js',
             'front_end/CSSMetadata.js',
             'front_end/CSSParser.js',
             'front_end/CSSStyleModel.js',
             'front_end/CSSStyleSheetMapping.js',
             'front_end/Database.js',
             'front_end/DataGrid.js',
             'front_end/DebuggerModel.js',
             'front_end/DebuggerScriptMapping.js',
             'front_end/Tests.js',
@@ skipping 237 matching lines @@
             'front_end/SourcesPanel.js',
             'front_end/SourcesSearchScope.js',
             'front_end/StyleSheetOutlineDialog.js',
             'front_end/TabbedEditorContainer.js',
             'front_end/UISourceCodeFrame.js',
             'front_end/WatchExpressionsSidebarPane.js',
             'front_end/WorkersSidebarPane.js',
             'front_end/ThreadsToolbar.js',
         ],
         'devtools_timeline_js_files': [
-            'front_end/MemoryStatistics.js',
+            'front_end/CountersGraph.js',
+            'front_end/DOMCountersGraph.js',
             'front_end/PieChart.js',
             'front_end/TimelineFrameModel.js',
             'front_end/TimelineModel.js',
             'front_end/TimelinePresentationModel.js',
             'front_end/TimelineOverviewPane.js',
             'front_end/TimelineEventOverview.js',
             'front_end/TimelineFlameChart.js',
             'front_end/TimelineFrameOverview.js',
             'front_end/TimelineMemoryOverview.js',
             'front_end/TimelineUIUtils.js',
@@ skipping 156 matching lines @@
             'front_end/TempStorageSharedWorker.js',
         ],
         'devtools_script_formatter_worker_js_files': [
             'front_end/CSSFormatter.js',
             'front_end/JavaScriptFormatter.js',
             'front_end/ScriptFormatterWorker.js',
             'front_end/utilities.js',
         ],
     },
 }