Enables win64 build of yuv_convert_simd_x86 without rolling x86inc.asm forward.

media/media.gyp

Index: media/media.gyp
diff --git a/media/media.gyp b/media/media.gyp
index 8b33bd8a4748369fcb76f31c46b9ff682ca22230..6583044e8741a95593fc010186e11c22558d710b 100644
--- a/media/media.gyp
+++ b/media/media.gyp
@@ -989,11 +989,23 @@
             }],
             [ 'OS=="win"', {
               'variables': {
-                'yasm_flags': [
-                  '-DWIN32',
-                  '-DMSVC',
-                  '-DCHROMIUM',
-                  '-Isimd',
+                'conditions': [

[DaleCurtis, 2013/01/26 01:44:14]

Instead of doing this, you could convert this target to use the yasm_compile
helper.

[wolenetz, 2013/01/26 03:13:18]

None of these are set (except PREFIX, incorrectly for win) in yasm_compile.gypi.
Unlike ffmpeg, in simd there is no config.asm for -DCHROMIUM or -DARCH_X86_64.
It appears -DWIN32 and -DMSVC are not required here.  I've built win64
yuv_convert_simd_x86 target, and for win32 I reran layout tests with minimal
failures.  See next PS.

+                  [ 'target_arch=="ia32"', {
+                    'yasm_flags': [
+                      '-DWIN32',
+                      '-DMSVC',
+                      '-DCHROMIUM',
+                      '-Isimd',
+                    ],
+                  }, {
+                    'yasm_flags': [
+                      '-DWIN32',
+                      '-DARCH_X86_64',
+                      '-DMSVC',
+                      '-DCHROMIUM',
+                      '-Isimd',
+                    ],
+                  }],
                 ],
               },
             }],