cc: Don't try set renderpasses on active tree after losing context.

cc/layers/delegated_renderer_layer_impl.cc

 // Copyright 2012 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 "cc/layers/delegated_renderer_layer_impl.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 60 matching lines @@
   // If we have a new child_id to give to the active layer, it should
   // have already deleted its old child_id.
   DCHECK(delegated_layer->child_id_ == 0 ||
          delegated_layer->child_id_ == child_id_);
   delegated_layer->inverse_device_scale_factor_ = inverse_device_scale_factor_;
   delegated_layer->child_id_ = child_id_;
   delegated_layer->own_child_id_ = true;
   own_child_id_ = false;
 
   if (have_render_passes_to_push_) {
+    DCHECK(child_id_);
     // This passes ownership of the render passes to the active tree.
     delegated_layer->SetRenderPasses(&render_passes_in_draw_order_);
     // Once resources are on the active tree, give them to the ResourceProvider
     // and release unused resources from the old frame.
     delegated_layer->TakeOwnershipOfResourcesIfOnActiveTree(resources_);
     DCHECK(render_passes_in_draw_order_.empty());
     have_render_passes_to_push_ = false;
   }
 
   // This is just a copy for testing, since resources are added to the
@@ skipping 118 matching lines @@
 }
 
 scoped_ptr<LayerImpl> DelegatedRendererLayerImpl::CreateLayerImpl(
     LayerTreeImpl* tree_impl) {
   return DelegatedRendererLayerImpl::Create(tree_impl, id());
 }
 
 void DelegatedRendererLayerImpl::ReleaseResources() {
   ClearRenderPasses();
   ClearChildId();
+  have_render_passes_to_push_ = false;
 }
 
 static inline int IndexToId(int index) { return index + 1; }
 static inline int IdToIndex(int id) { return id - 1; }
 
 RenderPassId DelegatedRendererLayerImpl::FirstContributingRenderPassId() const {
   return RenderPassId(id(), IndexToId(0));
 }
 
 RenderPassId DelegatedRendererLayerImpl::NextContributingRenderPassId(
@@ skipping 295 matching lines @@
   if (own_child_id_) {
     ResourceProvider* provider = layer_tree_impl()->resource_provider();
     provider->DestroyChild(child_id_);
   }
 
   resources_.clear();
   child_id_ = 0;
 }
 
 }  // namespace cc