16-bit video upload to float: intermediate R16_EXT and copy to float.

gpu/command_buffer/service/gles2_cmd_decoder_passthrough.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder_passthrough.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder_passthrough.cc b/gpu/command_buffer/service/gles2_cmd_decoder_passthrough.cc
index 81153951c088c4421adfb6e5ef975400d3517659..58a50594e93ffad66048a56cd325b23c355502e1 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder_passthrough.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder_passthrough.cc
@@ -359,6 +359,7 @@ gpu::Capabilities GLES2DecoderPassthroughImpl::GetCapabilities() {
   caps.blend_equation_advanced_coherent =
       feature_info_->feature_flags().blend_equation_advanced_coherent;
   caps.texture_rg = feature_info_->feature_flags().ext_texture_rg;
+  caps.texture_norm16 = feature_info_->feature_flags().ext_texture_norm16;
   caps.texture_half_float_linear =
       feature_info_->feature_flags().enable_texture_half_float_linear;
   caps.image_ycbcr_422 =