Layers view: Extract zoom/pan/rotate logic into transorm controller

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
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 #         * Redistributions in binary form must reproduce the above
@@ skipping 445 matching lines @@
             'front_end/Images/trackHoriz.png',
             'front_end/Images/trackVert.png',
         ],
         'devtools_layers_js_files': [
             'front_end/LayersPanel.js',
             'front_end/LayerTreeModel.js',
             'front_end/LayerTree.js',
             'front_end/Layers3DView.js',
             'front_end/LayerDetailsView.js',
             'front_end/PaintProfilerView.js',
+            'front_end/TransformController.js',
         ],
         'devtools_extension_api_files': [
             'front_end/ExtensionAPI.js',
         ],
         'devtools_temp_storage_shared_worker_js_files': [
             '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',
         ],
     },
 }