gpu: Upgrade DEPTH_COMPONENT16 to DEPTH_COMPONENT24 if possible

gpu/command_buffer/service/feature_info.cc

Index: gpu/command_buffer/service/feature_info.cc
diff --git a/gpu/command_buffer/service/feature_info.cc b/gpu/command_buffer/service/feature_info.cc
index b9fd20edcb99dcc13ab5b63a69f5e0c326b067bb..cddf0a5c963dc7c9f873039f655a5ab0b5df75ef 100644
--- a/gpu/command_buffer/service/feature_info.cc
+++ b/gpu/command_buffer/service/feature_info.cc
@@ -104,6 +104,7 @@ FeatureInfo::FeatureFlags::FeatureFlags()
       use_img_for_multisampled_render_to_texture(false),
       oes_standard_derivatives(false),
       oes_egl_image_external(false),
+      oes_depth24(false),
       npot_ok(false),
       enable_texture_float_linear(false),
       enable_texture_half_float_linear(false),
@@ -497,6 +498,7 @@ void FeatureInfo::InitializeFeatures() {
 
   if (extensions.Contains("GL_OES_depth24") || gfx::HasDesktopGLFeatures()) {
     AddExtensionString("GL_OES_depth24");
+    feature_flags_.oes_depth24 = true;
     validators_.render_buffer_format.AddValue(GL_DEPTH_COMPONENT24);
   }