Disable FRAMEBUFFER_SRGB when restoring from a null context state

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 68b894846bb0ff89ffbdd837869f1f4f0492aaf6..57564414bcc041bcfc3d5b8f20c7577b4d2a3e2f 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder.cc
@@ -3397,6 +3397,10 @@ bool GLES2DecoderImpl::Initialize(
     glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS);
   }
 
+  if (feature_info_->feature_flags().desktop_srgb_support) {
+    glDisable(GL_FRAMEBUFFER_SRGB);
+  }
+
   has_robustness_extension_ =
       context->HasExtension("GL_ARB_robustness") ||
       context->HasExtension("GL_KHR_robustness") ||
@@ -4232,7 +4236,8 @@ bool GLES2DecoderImpl::CheckBoundDrawFramebufferValid(const char* func_name) {
     // behave correctly.
     bool enable_framebuffer_srgb =
         framebuffer && framebuffer->HasSRGBAttachments();
-    state_.EnableDisableFramebufferSRGB(enable_framebuffer_srgb);
+    state_.EnableDisableFramebufferSRGB(enable_framebuffer_srgb ?
+        FRAMEBUFFER_SRGB_ENABLED : FRAMEBUFFER_SRGB_DISABLED);
   }
   return valid;
 }
@@ -4264,7 +4269,8 @@ bool GLES2DecoderImpl::CheckBoundFramebufferValid(const char* func_name) {
     bool enable_framebuffer_srgb =
         (draw_framebuffer && draw_framebuffer->HasSRGBAttachments()) ||
         (read_framebuffer && read_framebuffer->HasSRGBAttachments());
-    state_.EnableDisableFramebufferSRGB(enable_framebuffer_srgb);
+    state_.EnableDisableFramebufferSRGB(enable_framebuffer_srgb ?
+        FRAMEBUFFER_SRGB_ENABLED : FRAMEBUFFER_SRGB_DISABLED);
   }
 
   return valid;