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

gpu/command_buffer/service/gles2_cmd_decoder.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 
 #include <limits.h>
 #include <stddef.h>
 #include <stdint.h>
 #include <stdio.h>
@@ skipping 3125 matching lines @@
   caps.texture_format_bgra8888 =
       feature_info_->feature_flags().ext_texture_format_bgra8888;
   caps.texture_format_dxt1 =
       feature_info_->feature_flags().ext_texture_format_dxt1;
   caps.texture_format_dxt5 =
       feature_info_->feature_flags().ext_texture_format_dxt5;
   caps.texture_format_etc1 =
       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;
   caps.discard_framebuffer =
       feature_info_->feature_flags().ext_discard_framebuffer;
   caps.sync_query = feature_info_->feature_flags().chromium_sync_query;
 
 #if defined(OS_MACOSX)
   // This is unconditionally true on mac, no need to test for it at runtime.
   caps.iosurface = true;
@@ skipping 12778 matching lines @@
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "base/macros.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu