Move WGL header from include to src

gyp/utils.gypi

 # Include this gypi to include all 'utils' 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
 #
 {
     'sources': [
         # Classes for a threadpool.
@@ skipping 20 matching lines @@
         '<(skia_include_path)/utils/SkNWayCanvas.h',
         '<(skia_include_path)/utils/SkNullCanvas.h',
         '<(skia_include_path)/utils/SkParse.h',
         '<(skia_include_path)/utils/SkParsePaint.h',
         '<(skia_include_path)/utils/SkParsePath.h',
         '<(skia_include_path)/utils/SkPictureUtils.h',
         '<(skia_include_path)/utils/SkRandom.h',
         '<(skia_include_path)/utils/SkRTConf.h',
         '<(skia_include_path)/utils/SkProxyCanvas.h',
         '<(skia_include_path)/utils/SkTextBox.h',
-        '<(skia_include_path)/utils/SkWGL.h',
 
         '<(skia_src_path)/utils/SkBase64.cpp',
         '<(skia_src_path)/utils/SkBase64.h',
         '<(skia_src_path)/utils/SkBitmapHasher.cpp',
         '<(skia_src_path)/utils/SkBitmapHasher.h',
         '<(skia_src_path)/utils/SkBitSet.cpp',
         '<(skia_src_path)/utils/SkBitSet.h',
         '<(skia_src_path)/utils/SkBoundaryPatch.cpp',
         '<(skia_src_path)/utils/SkFrontBufferedStream.cpp',
         '<(skia_src_path)/utils/SkCamera.cpp',
@@ skipping 68 matching lines @@
         '<(skia_include_path)/utils/win/SkTScopedComPtr.h',
         '<(skia_src_path)/utils/win/SkAutoCoInitialize.cpp',
         '<(skia_src_path)/utils/win/SkDWrite.h',
         '<(skia_src_path)/utils/win/SkDWrite.cpp',
         '<(skia_src_path)/utils/win/SkDWriteFontFileStream.cpp',
         '<(skia_src_path)/utils/win/SkDWriteFontFileStream.h',
         '<(skia_src_path)/utils/win/SkDWriteGeometrySink.cpp',
         '<(skia_src_path)/utils/win/SkDWriteGeometrySink.h',
         '<(skia_src_path)/utils/win/SkHRESULT.cpp',
         '<(skia_src_path)/utils/win/SkIStream.cpp',
+        '<(skia_src_path)/utils/win/SkWGL.h',
         '<(skia_src_path)/utils/win/SkWGL_win.cpp',
 
         #testing
         '<(skia_src_path)/fonts/SkGScalerContext.cpp',
         '<(skia_src_path)/fonts/SkGScalerContext.h',
         '<(skia_src_path)/fonts/SkTestScalerContext.cpp',
         '<(skia_src_path)/fonts/SkTestScalerContext.h',
     ],
 }