cc: Complete swap promise for aborted commit after pending activation.

cc/trees/layer_tree_host.cc

 // Copyright 2011 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/trees/layer_tree_host.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 497 matching lines @@
   }
   // Setting property trees must happen before pushing the page scale.
   sync_tree->SetPropertyTrees(&property_trees_);
 
   sync_tree->PushPageScaleFromMainThread(
       page_scale_factor_, min_page_scale_factor_, max_page_scale_factor_);
   sync_tree->elastic_overscroll()->PushFromMainThread(elastic_overscroll_);
   if (sync_tree->IsActiveTree())
     sync_tree->elastic_overscroll()->PushPendingToActive();
 
-  sync_tree->PassSwapPromises(&swap_promise_list_);
+  sync_tree->PassSwapPromises(std::move(swap_promise_list_));
 
   sync_tree->set_top_controls_shrink_blink_size(
       top_controls_shrink_blink_size_);
   sync_tree->set_top_controls_height(top_controls_height_);
   sync_tree->PushTopControlsFromMainThread(top_controls_shown_ratio_);
 
   host_impl->SetHasGpuRasterizationTrigger(has_gpu_rasterization_trigger_);
   host_impl->SetContentIsSuitableForGpuRasterization(
       content_is_suitable_for_gpu_rasterization_);
   RecordGpuRasterizationHistogram();
@@ skipping 761 matching lines @@
   DCHECK(swap_promise);
   swap_promise_list_.push_back(std::move(swap_promise));
 }
 
 void LayerTreeHost::BreakSwapPromises(SwapPromise::DidNotSwapReason reason) {
   for (const auto& swap_promise : swap_promise_list_)
     swap_promise->DidNotSwap(reason);
   swap_promise_list_.clear();
 }
 
+std::vector<std::unique_ptr<SwapPromise>> LayerTreeHost::TakeSwapPromises() {
+  std::vector<std::unique_ptr<SwapPromise>> to_return;
+  to_return.swap(swap_promise_list_);
+  return to_return;
+}
+
 void LayerTreeHost::OnCommitForSwapPromises() {
   for (const auto& swap_promise : swap_promise_list_)
     swap_promise->OnCommit();
 }
 
 void LayerTreeHost::set_surface_client_id(uint32_t client_id) {
   surface_client_id_ = client_id;
 }
 
 SurfaceSequence LayerTreeHost::CreateSurfaceSequence() {
@@ skipping 405 matching lines @@
   int seq_num = property_trees_.sequence_number;
   LayerTreeHostCommon::CallFunctionForEveryLayer(this, [seq_num](Layer* layer) {
     layer->set_property_tree_sequence_number(seq_num);
   });
 
   surface_client_id_ = proto.surface_client_id();
   next_surface_sequence_ = proto.next_surface_sequence();
 }
 
 }  // namespace cc