Add utils gypi file

BUG=skia:
R=bsalomon@google.com, robertphillips@google.com

Author: egdaniel@google.com

Review URL: https://codereview.chromium.org/317733003
diff --git a/gyp/utils.gyp b/gyp/utils.gyp
index 9009ad9..583b710 100644
--- a/gyp/utils.gyp
+++ b/gyp/utils.gyp
@@ -9,6 +9,9 @@
       'dependencies': [
         'core.gyp:*',
       ],
+      'includes': [
+        'utils.gypi',
+      ],
       'include_dirs': [
         '../include/effects',
         '../include/images',
@@ -23,116 +26,7 @@
         '../src/utils',
       ],
       'sources': [
-        # Classes for a threadpool.
-        '../include/utils/SkCondVar.h',
-        '../include/utils/SkCountdown.h',
-        '../include/utils/SkRunnable.h',
-        '../include/utils/SkThreadPool.h',
-        '../src/utils/SkCondVar.cpp',
-        '../src/utils/SkCountdown.cpp',
-
-        '../include/utils/SkBoundaryPatch.h',
-        '../include/utils/SkFrontBufferedStream.h',
-        '../include/utils/SkCamera.h',
-        '../include/utils/SkCanvasStateUtils.h',
-        '../include/utils/SkCubicInterval.h',
-        '../include/utils/SkCullPoints.h',
-        '../include/utils/SkDebugUtils.h',
-        '../include/utils/SkDeferredCanvas.h',
-        '../include/utils/SkDumpCanvas.h',
-        '../include/utils/SkEventTracer.h',
-        '../include/utils/SkInterpolator.h',
-        '../include/utils/SkLayer.h',
-        '../include/utils/SkMatrix44.h',
-        '../include/utils/SkMeshUtils.h',
-        '../include/utils/SkNinePatch.h',
-        '../include/utils/SkNoSaveLayerCanvas.h',
-        '../include/utils/SkNWayCanvas.h',
-        '../include/utils/SkNullCanvas.h',
-        '../include/utils/SkParse.h',
-        '../include/utils/SkParsePaint.h',
-        '../include/utils/SkParsePath.h',
-        '../include/utils/SkPictureUtils.h',
-        '../include/utils/SkRandom.h',
-        '../include/utils/SkRTConf.h',
-        '../include/utils/SkProxyCanvas.h',
-        '../include/utils/SkWGL.h',
-
-        '../src/utils/SkBase64.cpp',
-        '../src/utils/SkBase64.h',
-        '../src/utils/SkBitmapHasher.cpp',
-        '../src/utils/SkBitmapHasher.h',
-        '../src/utils/SkBitSet.cpp',
-        '../src/utils/SkBitSet.h',
-        '../src/utils/SkBoundaryPatch.cpp',
-        '../src/utils/SkFrontBufferedStream.cpp',
-        '../src/utils/SkCamera.cpp',
-        '../src/utils/SkCanvasStack.h',
-        '../src/utils/SkCanvasStack.cpp',
-        '../src/utils/SkCanvasStateUtils.cpp',
-        '../src/utils/SkCubicInterval.cpp',
-        '../src/utils/SkCullPoints.cpp',
-        '../src/utils/SkDeferredCanvas.cpp',
-        '../src/utils/SkDumpCanvas.cpp',
-        '../src/utils/SkEventTracer.cpp',
-        '../src/utils/SkFloatUtils.h',
-        '../src/utils/SkGatherPixelRefsAndRects.cpp',
-        '../src/utils/SkGatherPixelRefsAndRects.h',
-        '../src/utils/SkInterpolator.cpp',
-        '../src/utils/SkLayer.cpp',
-        '../src/utils/SkMatrix22.cpp',
-        '../src/utils/SkMatrix22.h',
-        '../src/utils/SkMatrix44.cpp',
-        '../src/utils/SkMD5.cpp',
-        '../src/utils/SkMD5.h',
-        '../src/utils/SkMeshUtils.cpp',
-        '../src/utils/SkNinePatch.cpp',
-        '../src/utils/SkNWayCanvas.cpp',
-        '../src/utils/SkNullCanvas.cpp',
-        '../src/utils/SkOSFile.cpp',
-        '../src/utils/SkParse.cpp',
-        '../src/utils/SkParseColor.cpp',
-        '../src/utils/SkParsePath.cpp',
-        '../src/utils/SkPictureUtils.cpp',
-        '../src/utils/SkPathUtils.cpp',
-        '../src/utils/SkProxyCanvas.cpp',
-        '../src/utils/SkSHA1.cpp',
-        '../src/utils/SkSHA1.h',
-        '../src/utils/SkRTConf.cpp',
-        '../src/utils/SkThreadUtils.h',
-        '../src/utils/SkThreadUtils_pthread.cpp',
-        '../src/utils/SkThreadUtils_pthread.h',
-        '../src/utils/SkThreadUtils_pthread_linux.cpp',
-        '../src/utils/SkThreadUtils_pthread_mach.cpp',
-        '../src/utils/SkThreadUtils_pthread_other.cpp',
-        '../src/utils/SkThreadUtils_win.cpp',
-        '../src/utils/SkThreadUtils_win.h',
-        '../src/utils/SkTFitsIn.h',
-        '../src/utils/SkTLogic.h',
-
-        #mac
-        '../include/utils/mac/SkCGUtils.h',
-        '../src/utils/mac/SkCreateCGImageRef.cpp',
-
-        #windows
-        '../include/utils/win/SkAutoCoInitialize.h',
-        '../include/utils/win/SkHRESULT.h',
-        '../include/utils/win/SkIStream.h',
-        '../include/utils/win/SkTScopedComPtr.h',
-        '../src/utils/win/SkAutoCoInitialize.cpp',
-        '../src/utils/win/SkDWrite.h',
-        '../src/utils/win/SkDWrite.cpp',
-        '../src/utils/win/SkDWriteFontFileStream.cpp',
-        '../src/utils/win/SkDWriteFontFileStream.h',
-        '../src/utils/win/SkDWriteGeometrySink.cpp',
-        '../src/utils/win/SkDWriteGeometrySink.h',
-        '../src/utils/win/SkHRESULT.cpp',
-        '../src/utils/win/SkIStream.cpp',
-        '../src/utils/win/SkWGL_win.cpp',
-
-        #testing
-        '../src/fonts/SkGScalerContext.cpp',
-        '../src/fonts/SkGScalerContext.h',
+        'utils.gypi', # Makes the gypi appear in IDEs (but does not modify the build).
       ],
       'sources!': [
           '../src/utils/SDL/SkOSWindow_SDL.cpp',