SRGB_EXT is a valid format of texture in WebGL1.0 and ES2.0 contexts

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 24fe49f94668c10fa8adb6e0564bafde487a7ae4..b2b468ca681051ea01ed8ed42c34541d5ccad314 100644
--- a/gpu/command_buffer/service/feature_info.cc
+++ b/gpu/command_buffer/service/feature_info.cc
@@ -542,9 +542,12 @@ void FeatureInfo::InitializeFeatures() {
   // sized formats GL_SRGB8 and GL_SRGB8_ALPHA8. Also, SRGB_EXT isn't a valid
   // <format> in this case. So, even with GLES3 explicitly check for
   // GL_EXT_sRGB.
-  if (((gl_version_info_->is_es3 || extensions.Contains("GL_OES_rgb8_rgba8")) &&
-       extensions.Contains("GL_EXT_sRGB")) ||
-      gfx::HasDesktopGLFeatures()) {
+  if ((((gl_version_info_->is_es3 ||
+         extensions.Contains("GL_OES_rgb8_rgba8")) &&
+        extensions.Contains("GL_EXT_sRGB")) ||
+       gfx::HasDesktopGLFeatures()) &&
+      (context_type_ == CONTEXT_TYPE_WEBGL1 ||
+       context_type_ == CONTEXT_TYPE_OPENGLES2)) {
     AddExtensionString("GL_EXT_sRGB");
     validators_.texture_internal_format.AddValue(GL_SRGB_EXT);
     validators_.texture_internal_format.AddValue(GL_SRGB_ALPHA_EXT);
@@ -553,6 +556,7 @@ void FeatureInfo::InitializeFeatures() {
     validators_.render_buffer_format.AddValue(GL_SRGB8_ALPHA8_EXT);
     validators_.frame_buffer_parameter.AddValue(
         GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING_EXT);
+    validators_.texture_unsized_internal_format.AddValue(GL_SRGB_EXT);
     validators_.texture_unsized_internal_format.AddValue(GL_SRGB_ALPHA_EXT);
   }