[media]: Replace LUMINANCE_F16 by R16 for 9/10-bit h264 videos.

cc/resources/resource_provider.cc

Index: cc/resources/resource_provider.cc
diff --git a/cc/resources/resource_provider.cc b/cc/resources/resource_provider.cc
index fc86a436df84065a8edf53b3139cb8bb8c79da63..391f1f40acc677f967b28b0e4d153d513db92c17 100644
--- a/cc/resources/resource_provider.cc
+++ b/cc/resources/resource_provider.cc
@@ -32,6 +32,7 @@
 #include "gpu/command_buffer/client/context_support.h"
 #include "gpu/command_buffer/client/gles2_interface.h"
 #include "gpu/command_buffer/client/gpu_memory_buffer_manager.h"
+#include "media/base/media_switches.h"
 #include "skia/ext/texture_handle.h"
 #include "third_party/khronos/GLES2/gl2.h"
 #include "third_party/khronos/GLES2/gl2ext.h"
@@ -106,6 +107,7 @@ GLenum TextureToStorageFormat(viz::ResourceFormat format) {
     case viz::ETC1:
     case viz::RED_8:
     case viz::LUMINANCE_F16:
+    case viz::R16_EXT:
       NOTREACHED();
       break;
   }
@@ -127,6 +129,7 @@ bool IsFormatSupportedForStorage(viz::ResourceFormat format, bool use_bgra) {
     case viz::ETC1:
     case viz::RED_8:
     case viz::LUMINANCE_F16:
+    case viz::R16_EXT:
       return false;
   }
   return false;
@@ -354,9 +357,12 @@ ResourceProvider::Settings::Settings(
     yuv_resource_format = yuv_highbit_resource_format = viz::RGBA_8888;
   } else {
     yuv_resource_format = caps.texture_rg ? viz::RED_8 : viz::LUMINANCE_8;
-    yuv_highbit_resource_format = caps.texture_half_float_linear
-                                      ? viz::LUMINANCE_F16
-                                      : yuv_resource_format;
+    yuv_highbit_resource_format =
+        (base::FeatureList::IsEnabled(media::kUseR16Texture) &&
+         caps.texture_norm16)
+            ? viz::R16_EXT
+            : (caps.texture_half_float_linear ? viz::LUMINANCE_F16
+                                              : yuv_resource_format);
   }
 
   GLES2Interface* gl = compositor_context_provider->ContextGL();
@@ -458,6 +464,8 @@ bool ResourceProvider::IsTextureFormatSupported(
       return caps.texture_format_etc1;
     case viz::RED_8:
       return caps.texture_rg;
+    case viz::R16_EXT:
+      return caps.texture_norm16;
     case viz::LUMINANCE_F16:
     case viz::RGBA_F16:
       return caps.texture_half_float_linear;
@@ -491,6 +499,7 @@ bool ResourceProvider::IsRenderBufferFormatSupported(
     case viz::RED_8:
     case viz::ETC1:
     case viz::LUMINANCE_F16:
+    case viz::R16_EXT:
       // We don't currently render into these formats. If we need to render into
       // these eventually, we should expand this logic.
       return false;