Attaching an image to many color attachment points is unsupported

gpu/command_buffer/service/feature_info.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/feature_info.h"
 
 #include <stddef.h>
 
 #include <set>
 #include <vector>
@@ skipping 193 matching lines @@
 
 bool FeatureInfo::InitializeForTesting(
     const DisallowedFeatures& disallowed_features) {
   return Initialize(CONTEXT_TYPE_OPENGLES2, disallowed_features);
 }
 
 bool FeatureInfo::InitializeForTesting() {
   return Initialize(CONTEXT_TYPE_OPENGLES2, DisallowedFeatures());
 }
 
+bool FeatureInfo::InitializeForTesting(ContextType context_type) {
+  return Initialize(context_type, DisallowedFeatures());
+}
+
 bool IsGL_REDSupportedOnFBOs() {
   // Skia uses GL_RED with frame buffers, unfortunately, Mesa claims to support
   // GL_EXT_texture_rg, but it doesn't support it on frame buffers.  To fix
   // this, we try it, and if it fails, we don't expose GL_EXT_texture_rg.
   GLint fb_binding = 0;
   GLint tex_binding = 0;
   glGetIntegerv(GL_FRAMEBUFFER_BINDING, &fb_binding);
   glGetIntegerv(GL_TEXTURE_BINDING_2D, &tex_binding);
 
   GLuint textureId = 0;
@@ skipping 1208 matching lines @@
   if (pos == std::string::npos) {
     extensions_ += (extensions_.empty() ? "" : " ") + str;
   }
 }
 
 FeatureInfo::~FeatureInfo() {
 }
 
 }  // namespace gles2
 }  // namespace gpu