cc: Get rid of LayerTreeHost::output_surface_lost_ state.

blimp/client/app/compositor/browser_compositor.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "blimp/client/app/compositor/browser_compositor.h"
 
 #include "base/lazy_instance.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "blimp/client/feature/compositor/blimp_context_provider.h"
 #include "blimp/client/feature/compositor/blimp_gpu_memory_buffer_manager.h"
@@ skipping 124 matching lines @@
     display_->Resize(viewport_size_in_px_);
   }
 }
 
 void BrowserCompositor::SetAcceleratedWidget(gfx::AcceleratedWidget widget) {
   // Kill all references to the old widget.
   if (widget_ != gfx::kNullAcceleratedWidget) {
     // We are always visible if we have a widget.
     DCHECK(host_->visible());
     host_->SetVisible(false);
-    if (!host_->output_surface_lost()) {
-      host_->ReleaseOutputSurface();
-    }
+    host_->ReleaseOutputSurface();
     display_.reset();
   }
 
   widget_ = gfx::kNullAcceleratedWidget;
 
   if (widget != gfx::kNullAcceleratedWidget) {
     widget_ = widget;
     host_->SetVisible(true);
     if (output_surface_request_pending_)
       HandlePendingOutputSurfaceRequest();
@@ skipping 58 matching lines @@
   std::unique_ptr<cc::OutputSurface> delegated_output_surface =
       base::MakeUnique<cc::SurfaceDisplayOutputSurface>(
           BrowserCompositor::GetSurfaceManager(), surface_id_allocator_.get(),
           display_.get(), context_provider, nullptr);
 
   host_->SetOutputSurface(std::move(delegated_output_surface));
 }
 
 }  // namespace client
 }  // namespace blimp