Revert of Turn on FRAMEBUFFER_SRGB on desktop GL.

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 0f9bc4d3a7df26e424c8d44582f4ad7a0723b0f9..affed33b0e82a8399fc076eb5e414d73e347da4a 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder.cc
@@ -3032,14 +3032,6 @@
   if (!feature_info_->workarounds().disable_texture_cube_map_seamless &&
       feature_info_->gl_version_info().IsAtLeastGL(3, 2)) {
     glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS);
-  }
-
-  // ES3 requires sRGB-linear color space conversion if
-  // FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING for a buffer is sRGB, for situations
-  // like blending, clearing, etc.
-  // On Desktop GL, this is not enabled by default.
-  if (feature_info_->gl_version_info().IsAtLeastGL(3, 2)) {
-    glEnable(GL_FRAMEBUFFER_SRGB);
   }
 
   has_robustness_extension_ =