Avoid planar YUV resources when one component EGL images are not supported

gpu/command_buffer/service/gles2_cmd_decoder.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder.cc b/gpu/command_buffer/service/gles2_cmd_decoder.cc
index 671023b4bee5b161edd51f0ef0095fc6fd283d06..ed8b8f554699e71d3904280c37459b2d492bdc8b 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder.cc
@@ -3143,6 +3143,9 @@ Capabilities GLES2DecoderImpl::GetCapabilities() {
       feature_info_->feature_flags().oes_compressed_etc1_rgb8_texture;
   caps.texture_format_etc1_npot =
       caps.texture_format_etc1 && !workarounds().etc1_power_of_two_only;
+  caps.avoid_one_component_egl_images =

[no sievers, 2016/03/08 01:14:49]

nit: The client doesn't know anything about EGL images being used, but we should
rather say that we are forcing RGBA8 mailbox textures or whatever. (Note that we
also don't support mipmaps, and only support GL_TEXTURE_2D).

[Tobias Sargeant, 2016/03/08 12:06:37]

I renamed this to force_software_yuv_conversion. WDYT?

+      mailbox_manager()->UsesSync() &&
+      workarounds().avoid_one_component_egl_images;
   caps.texture_rectangle = feature_info_->feature_flags().arb_texture_rectangle;
   caps.texture_usage = feature_info_->feature_flags().angle_texture_usage;
   caps.texture_storage = feature_info_->feature_flags().ext_texture_storage;