Enable RAW codec for Windows

gyp/codec.gyp

Index: gyp/codec.gyp
diff --git a/gyp/codec.gyp b/gyp/codec.gyp
index d7272e2a7a9b80f340aa209e1b865151d9fbb09a..336360294fad0a78d3049efde8d907db395285c1 100644
--- a/gyp/codec.gyp
+++ b/gyp/codec.gyp
@@ -67,8 +67,8 @@
         'TURBO_HAS_SKIP',
       ],
       'conditions': [
-        # FIXME: fix the support for Windows. (Issue with _hypot in DNG SDK).
-        ['skia_codec_decodes_raw and skia_os != "win" and skia_os != "chromeos"', {
+        # FIXME: fix the support for ChromeOS [DNG SDK issue with clock_gettime()].
+        ['skia_codec_decodes_raw and skia_os != "chromeos"', {
           'dependencies': [
             'raw_codec',
           ],
@@ -89,6 +89,11 @@
       'cflags':[
         '-fexceptions',
       ],
+      'msvs_settings': {
+        'VCCLCompilerTool': {
+          'AdditionalOptions': ['/EHsc', ],

[msarett, 2016/01/27 15:57:23]

nit: Please comment on why this is necessary.  I ask because I think it's
interesting.

[yujieqin, 2016/01/27 16:05:57]

Done.

+        },
+      },
       'include_dirs': [
         '../include/codec',
         '../include/private',