gpu: enable FRAMBUFFER_SRGB on desktop

gpu/command_buffer/service/gles2_cmd_decoder.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder.cc b/gpu/command_buffer/service/gles2_cmd_decoder.cc
index 1dec5cf2002c7dfcdf9db9099edbdfd5c3b84b1b..e8d216be2ca9430ac46e5481ac0b023ad3fa6b34 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder.cc
@@ -2938,6 +2938,14 @@ bool GLES2DecoderImpl::Initialize(
     glEnable(GL_POINT_SPRITE);
   }
 
+  // Desktop GL (including the core profile) does not enable this context state
+  // by default, but OpenGL ES (including when the EXT_sRGB_write_control
+  // extension is present) enable it by default.
+  if (!feature_info_->gl_version_info().is_es &&
+      feature_info_->feature_flags().ext_framebuffer_srgb) {
+    glEnable(GL_FRAMEBUFFER_SRGB);
+  }
+
   has_robustness_extension_ =
       context->HasExtension("GL_ARB_robustness") ||
       context->HasExtension("GL_KHR_robustness") ||