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..b12db7267519ea5ac43cd3d2ec05d2624723faa0 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder.cc
@@ -4232,7 +4232,8 @@ 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 +4265,8 @@ 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;