Make GrPaint have a variable sized array of color and coverage stages rather than a fixed size.

gyp/gpu.gypi

 # Include this gypi to include all 'gpu' files
 # The parent gyp/gypi file must define
 #       'skia_src_path'     e.g. skia/trunk/src
 #       'skia_include_path' e.g. skia/trunk/include
 #
 # The skia build defines these in common_variables.gypi
 #
 {
   'variables': {
     'skgpu_sources': [
@@ skipping 66 matching lines @@
       '<(skia_src_path)/gpu/GrGpu.cpp',
       '<(skia_src_path)/gpu/GrGpu.h',
       '<(skia_src_path)/gpu/GrGpuFactory.cpp',
       '<(skia_src_path)/gpu/GrIndexBuffer.h',
       '<(skia_src_path)/gpu/GrInOrderDrawBuffer.cpp',
       '<(skia_src_path)/gpu/GrInOrderDrawBuffer.h',
       '<(skia_src_path)/gpu/GrMemory.cpp',
       '<(skia_src_path)/gpu/GrMemoryPool.cpp',
       '<(skia_src_path)/gpu/GrMemoryPool.h',
       '<(skia_src_path)/gpu/GrOvalRenderer.cpp',
+      '<(skia_src_path)/gpu/GrPaint.cpp',
       '<(skia_src_path)/gpu/GrPath.cpp',
       '<(skia_src_path)/gpu/GrPath.h',
       '<(skia_src_path)/gpu/GrPathRendererChain.cpp',
       '<(skia_src_path)/gpu/GrPathRenderer.cpp',
       '<(skia_src_path)/gpu/GrPathRenderer.h',
       '<(skia_src_path)/gpu/GrPathUtils.cpp',
       '<(skia_src_path)/gpu/GrPathUtils.h',
       '<(skia_src_path)/gpu/GrPlotMgr.h',
       '<(skia_src_path)/gpu/GrRectanizer.cpp',
       '<(skia_src_path)/gpu/GrRectanizer.h',
@@ skipping 175 matching lines @@
       '<(skia_src_path)/gpu/gl/SkNullGLContext.cpp',
     ],
   },
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: