enable color tests on windows

Doesn't seem to break anything.

Bug: 647842
Change-Id: I5151602cc62a6c14bff5ac1398cd7f8cd01d1555
Reviewed-on: https://chromium-review.googlesource.com/1159354Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Commit-Queue: Fredrik Hubinette <hubbe@chromium.org>
Cr-Commit-Position: refs/heads/master@{#580252}

content/browser/media/media_color_browsertest.cc

@@ -77,9 +77,8 @@ IN_PROC_BROWSER_TEST_F(MediaColorTest, MAYBE_Yuvj420pH264) {
 }
 
 // This fails on ChromeOS: http://crbug.com/647400,
-// Windows: http://crbug.com/647842, and Android: http://crbug.com/649199,
-// http://crbug.com/649185.
-#if defined(OS_CHROMEOS) || defined(OS_WIN) || defined(OS_ANDROID)
+// and Android: http://crbug.com/649199, http://crbug.com/649185.
+#if defined(OS_CHROMEOS) || defined(OS_ANDROID)
 #define MAYBE_Yuv420pRec709H264 DISABLED_Yuv420pRec709H264
 #else
 #define MAYBE_Yuv420pRec709H264 Yuv420pRec709H264