Add CC software renderer.

cc/cc.gyp

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     'chromium_code': 0,
     'use_libcc_for_compositor%': 0,
     'cc_source_files': [
       'BitmapCanvasLayerTextureUpdater.cpp',
@@ skipping 83 matching lines @@
       'CCRenderPassDrawQuad.h',
       'CCRenderPassSink.h',
       'CCRenderSurface.cpp',
       'CCRenderSurface.h',
       'CCRenderSurfaceFilters.cpp',
       'CCRenderSurfaceFilters.h',
       'CCRenderer.cpp',
       'CCRenderer.h',
       'CCRendererGL.cpp',
       'CCRendererGL.h',
+      'CCRendererSoftware.cpp',
+      'CCRendererSoftware.h',
       'CCRenderingStats.h',
       'CCResourceProvider.cpp',
       'CCResourceProvider.h',
       'CCScheduler.cpp',
       'CCScheduler.h',
       'CCSchedulerStateMachine.cpp',
       'CCSchedulerStateMachine.h',
       'CCScopedTexture.cpp',
       'CCScopedTexture.h',
       'CCScopedThreadProxy.cpp',
@@ skipping 149 matching lines @@
             'stubs/SkiaUtils.h',
             'stubs/TilingData.h',
             'stubs/TraceEvent.h',
             'stubs/UnitBezier.h',
           ],
         }],
       ],
     },
   ],
 }