Disable FRAMEBUFFER_SRGB when restoring from a null context state

gpu/command_buffer/service/context_state.cc

Index: gpu/command_buffer/service/context_state.cc
diff --git a/gpu/command_buffer/service/context_state.cc b/gpu/command_buffer/service/context_state.cc
index c19ffa5272b5746ecf65646b057a25364cd65693..1218dd6c8380c455f4b08a7e150d5ac5b5ef805f 100644
--- a/gpu/command_buffer/service/context_state.cc
+++ b/gpu/command_buffer/service/context_state.cc
@@ -495,7 +495,11 @@ void ContextState::RestoreState(const ContextState* prev_state) {
   RestoreIndexedUniformBufferBindings(prev_state);
   RestoreGlobalState(prev_state);
 
-  if (prev_state && framebuffer_srgb_ != prev_state->framebuffer_srgb_) {
+  if (!prev_state) {
+    if (feature_info_->feature_flags().desktop_srgb_support) {
+      glDisable(GL_FRAMEBUFFER_SRGB);

[Zhenyao Mo, 2016/08/19 17:16:59]

We need to set framebuffer_srgb_ to false here.

[qiankun, 2016/08/19 22:03:15]

Done.

+    }
+  } else if (framebuffer_srgb_ != prev_state->framebuffer_srgb_) {
     // FRAMEBUFFER_SRGB will be restored lazily at render time.
     framebuffer_srgb_ = prev_state->framebuffer_srgb_;
   }