media: replace LUMINANCE_F16 by RG_88 for 9/10-bit h264 videos

cc/base/switches.cc

Index: cc/base/switches.cc
diff --git a/cc/base/switches.cc b/cc/base/switches.cc
index ef4cbc6056b9928b377b16c1b2556e358f413f3b..3614b53903434a0a5b816ca8fc9421dcb1115200 100644
--- a/cc/base/switches.cc
+++ b/cc/base/switches.cc
@@ -44,6 +44,10 @@ const char kSlowDownRasterScaleFactor[] = "slow-down-raster-scale-factor";
 // Compress tile textures for GPUs supporting it.
 const char kEnableTileCompression[] = "enable-tile-compression";
 
+// Use RG8 texture instead of half float conversion by CPU.
+const char kDisableHalfFloatConversionTexture[] =

[hubbe, 2016/09/27 20:49:51]

Please use the features API instead.

[dshwang, 2016/09/28 10:33:27]

Got it.

[hubbe, 2016/09/28 17:57:44]

Usually people don't reply until they have actually implemented the change. (Did
you forget to upload?)

[dshwang, 2016/09/29 18:52:27]

Usually I did :) I want to listen to your opinion about shader, so I asked
without new patch. your answer was very helpful!

I added kUseRGTexture in new patch set.
const base::Feature kUseRGTexture{"use-rg-texture",
                                  base::FEATURE_DISABLED_BY_DEFAULT};

+    "disable-half-float-conversion-texture";
+
 // Enable color space aware rasterization and compositing.
 const char kEnableColorCorrectRendering[] = "enable-color-correct-rendering";