Enabled EXT_sRGB WebGL extension support in the command buffer.

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 <set>
 
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 374 matching lines @@
   if (workarounds_.use_client_side_arrays_for_stream_buffers) {
     feature_flags_.native_vertex_array_object = false;
   }
 
   if (is_es3 || extensions.Contains("GL_OES_element_index_uint") ||
       gfx::HasDesktopGLFeatures()) {
     AddExtensionString("GL_OES_element_index_uint");
     validators_.index_type.AddValue(GL_UNSIGNED_INT);
   }
 
+  if (is_es3 || extensions.Contains("GL_EXT_sRGB") ||
+      gfx::HasDesktopGLFeatures()) {
+    AddExtensionString("GL_EXT_sRGB");
+    texture_format_validators_[GL_SRGB_EXT].AddValue(GL_UNSIGNED_BYTE);
+    texture_format_validators_[GL_SRGB_ALPHA_EXT].AddValue(GL_UNSIGNED_BYTE);
+    validators_.texture_internal_format.AddValue(GL_SRGB_EXT);
+    validators_.texture_internal_format.AddValue(GL_SRGB_ALPHA_EXT);
+    validators_.texture_format.AddValue(GL_SRGB_EXT);
+    validators_.texture_format.AddValue(GL_SRGB_ALPHA_EXT);
+    validators_.render_buffer_format.AddValue(GL_SRGB8_ALPHA8_EXT);
+    validators_.frame_buffer_parameter.AddValue(
+        GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING_EXT);
+  }
+
   bool enable_texture_format_bgra8888 = false;
   bool enable_read_format_bgra = false;
   bool enable_render_buffer_bgra = false;
   bool enable_immutable_texture_format_bgra_on_es3 =
       extensions.Contains("GL_APPLE_texture_format_BGRA8888");
 
   // Check if we should allow GL_EXT_texture_format_BGRA8888
   if (extensions.Contains("GL_EXT_texture_format_BGRA8888") ||
       enable_immutable_texture_format_bgra_on_es3 ||
       extensions.Contains("GL_EXT_bgra")) {
@@ skipping 469 matching lines @@
   if (pos == std::string::npos) {
     extensions_ += (extensions_.empty() ? "" : " ") + str;
   }
 }
 
 FeatureInfo::~FeatureInfo() {
 }
 
 }  // namespace gles2
 }  // namespace gpu