During virtual context switches only restore texture units that have changed from the previous cont…

gpu/command_buffer/service/gl_state_restorer_impl.cc

Index: gpu/command_buffer/service/gl_state_restorer_impl.cc
diff --git a/gpu/command_buffer/service/gl_state_restorer_impl.cc b/gpu/command_buffer/service/gl_state_restorer_impl.cc
index 7b3c5ed384148318cde872d3a1c343ccb488feab..710eb2a42330c7c948b1014ec717576758fc3c2e 100644
--- a/gpu/command_buffer/service/gl_state_restorer_impl.cc
+++ b/gpu/command_buffer/service/gl_state_restorer_impl.cc
@@ -21,14 +21,17 @@ bool GLStateRestorerImpl::IsInitialized() {
   return decoder_->initialized();
 }
 
-void GLStateRestorerImpl::RestoreState() {
+void GLStateRestorerImpl::RestoreState(const gfx::GLStateRestorer* prev_state) {
   DCHECK(decoder_.get());
-  decoder_->RestoreState();
+  const GLStateRestorerImpl* restorer_impl =
+      static_cast<const GLStateRestorerImpl*>(prev_state);
+  decoder_->RestoreState(
+      restorer_impl ? restorer_impl->GetContextState() : NULL);
 }
 
 void GLStateRestorerImpl::RestoreAllTextureUnitBindings() {
   DCHECK(decoder_.get());
-  decoder_->RestoreAllTextureUnitBindings();
+  decoder_->RestoreAllTextureUnitBindings(NULL);
 }
 
 void GLStateRestorerImpl::RestoreFramebufferBindings() {
@@ -36,4 +39,9 @@ void GLStateRestorerImpl::RestoreFramebufferBindings() {
   decoder_->RestoreFramebufferBindings();
 }
 
+const gles2::ContextState* GLStateRestorerImpl::GetContextState() const {
+  DCHECK(decoder_.get());
+  return decoder_->GetContextState();
+}
+
 }  // namespace gpu