Convert //cc from scoped_ptr to std::unique_ptr.

cc/trees/layer_tree_host_impl.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_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <set>
 #include <unordered_map>
 #include <utility>
 
 #include "base/auto_reset.h"
 #include "base/containers/small_map.h"
 #include "base/json/json_writer.h"
+#include "base/memory/ptr_util.h"
 #include "base/metrics/histogram.h"
 #include "base/numerics/safe_conversions.h"
 #include "base/stl_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/trace_event/trace_event_argument.h"
 #include "cc/animation/animation_events.h"
 #include "cc/animation/animation_host.h"
 #include "cc/animation/timing_function.h"
 #include "cc/base/histograms.h"
 #include "cc/base/math_util.h"
@@ skipping 127 matching lines @@
   }
 }
 
 }  // namespace
 
 LayerTreeHostImpl::FrameData::FrameData()
     : render_surface_layer_list(nullptr), has_no_damage(false) {}
 
 LayerTreeHostImpl::FrameData::~FrameData() {}
 
-scoped_ptr<LayerTreeHostImpl> LayerTreeHostImpl::Create(
+std::unique_ptr<LayerTreeHostImpl> LayerTreeHostImpl::Create(
     const LayerTreeSettings& settings,
     LayerTreeHostImplClient* client,
     TaskRunnerProvider* task_runner_provider,
     RenderingStatsInstrumentation* rendering_stats_instrumentation,
     SharedBitmapManager* shared_bitmap_manager,
     gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
     TaskGraphRunner* task_graph_runner,
     int id) {
-  return make_scoped_ptr(new LayerTreeHostImpl(
+  return base::WrapUnique(new LayerTreeHostImpl(
       settings, client, task_runner_provider, rendering_stats_instrumentation,
       shared_bitmap_manager, gpu_memory_buffer_manager, task_graph_runner, id));
 }
 
 LayerTreeHostImpl::LayerTreeHostImpl(
     const LayerTreeSettings& settings,
     LayerTreeHostImplClient* client,
     TaskRunnerProvider* task_runner_provider,
     RenderingStatsInstrumentation* rendering_stats_instrumentation,
     SharedBitmapManager* shared_bitmap_manager,
@@ skipping 300 matching lines @@
     base::TimeDelta duration) {
   if (!InnerViewportScrollLayer())
     return;
 
   gfx::ScrollOffset scroll_total = active_tree_->TotalScrollOffset();
   gfx::SizeF scaled_scrollable_size = active_tree_->ScrollableSize();
   gfx::SizeF viewport_size =
       gfx::SizeF(active_tree_->InnerViewportContainerLayer()->bounds());
 
   // Easing constants experimentally determined.
-  scoped_ptr<TimingFunction> timing_function =
+  std::unique_ptr<TimingFunction> timing_function =
       CubicBezierTimingFunction::Create(.8, 0, .3, .9);
 
   // TODO(miletus) : Pass in ScrollOffset.
   page_scale_animation_ = PageScaleAnimation::Create(
       ScrollOffsetToVector2dF(scroll_total),
       active_tree_->current_page_scale_factor(), viewport_size,
       scaled_scrollable_size, std::move(timing_function));
 
   if (anchor_point) {
     gfx::Vector2dF anchor(target_offset);
@@ skipping 72 matching lines @@
       gfx::PointF(viewport_point), active_tree_->device_scale_factor());
 
   // Now determine if there are actually any handlers at that point.
   // TODO(rbyers): Consider also honoring touch-action (crbug.com/347272).
   LayerImpl* layer_impl =
       active_tree_->FindLayerThatIsHitByPointInTouchHandlerRegion(
           device_viewport_point);
   return layer_impl != NULL;
 }
 
-scoped_ptr<SwapPromiseMonitor>
+std::unique_ptr<SwapPromiseMonitor>
 LayerTreeHostImpl::CreateLatencyInfoSwapPromiseMonitor(
     ui::LatencyInfo* latency) {
-  return make_scoped_ptr(
+  return base::WrapUnique(
       new LatencyInfoSwapPromiseMonitor(latency, NULL, this));
 }
 
 ScrollElasticityHelper* LayerTreeHostImpl::CreateScrollElasticityHelper() {
   DCHECK(!scroll_elasticity_helper_);
   if (settings_.enable_elastic_overscroll) {
     scroll_elasticity_helper_.reset(
         ScrollElasticityHelper::CreateForLayerTreeHostImpl(this));
   }
   return scroll_elasticity_helper_.get();
 }
 
 void LayerTreeHostImpl::QueueSwapPromiseForMainThreadScrollUpdate(
-    scoped_ptr<SwapPromise> swap_promise) {
+    std::unique_ptr<SwapPromise> swap_promise) {
   swap_promises_for_main_thread_scroll_update_.push_back(
       std::move(swap_promise));
 }
 
 void LayerTreeHostImpl::TrackDamageForAllSurfaces(
     LayerImpl* root_draw_layer,
     const LayerImplList& render_surface_layer_list) {
   // For now, we use damage tracking to compute a global scissor. To do this, we
   // must compute all damage tracking before drawing anything, so that we know
   // the root damage rect. The root damage rect is then used to scissor each
@@ skipping 28 matching lines @@
     for (size_t i = 0; i < render_passes.size(); ++i) {
       value->BeginDictionary();
       render_passes[i]->AsValueInto(value);
       value->EndDictionary();
     }
     value->EndArray();
   }
 }
 
 void LayerTreeHostImpl::FrameData::AppendRenderPass(
-    scoped_ptr<RenderPass> render_pass) {
+    std::unique_ptr<RenderPass> render_pass) {
   render_passes.push_back(std::move(render_pass));
 }
 
 DrawMode LayerTreeHostImpl::GetDrawMode() const {
   if (resourceless_software_draw_) {
     return DRAW_MODE_RESOURCELESS_SOFTWARE;
   } else if (output_surface_->context_provider()) {
     return DRAW_MODE_HARDWARE;
   } else {
     return DRAW_MODE_SOFTWARE;
@@ skipping 83 matching lines @@
                  visible_screen_space_rect,
                  screen_background_color,
                  false);
   }
 }
 
 static RenderPass* FindRenderPassById(const RenderPassList& list,
                                       RenderPassId id) {
   auto it = std::find_if(
       list.begin(), list.end(),
-      [id](const scoped_ptr<RenderPass>& p) { return p->id == id; });
+      [id](const std::unique_ptr<RenderPass>& p) { return p->id == id; });
   return it == list.end() ? nullptr : it->get();
 }
 
 DrawResult LayerTreeHostImpl::CalculateRenderPasses(
     FrameData* frame) {
   DCHECK(frame->render_passes.empty());
   DCHECK(CanDraw());
   DCHECK(active_tree_->root_layer());
 
   TrackDamageForAllSurfaces(active_tree_->root_layer(),
@@ skipping 204 matching lines @@
         active_tree_->RootScrollLayerDeviceViewportBounds(),
         frame->render_passes.back().get(), active_tree_->root_layer(),
         active_tree_->background_color(), unoccluded_screen_space_region);
   }
 
   RemoveRenderPasses(frame);
   renderer_->DecideRenderPassAllocationsForFrame(frame->render_passes);
 
   // Any copy requests left in the tree are not going to get serviced, and
   // should be aborted.
-  std::vector<scoped_ptr<CopyOutputRequest>> requests_to_abort;
+  std::vector<std::unique_ptr<CopyOutputRequest>> requests_to_abort;
   while (!active_tree_->LayersWithCopyOutputRequest().empty()) {
     LayerImpl* layer = active_tree_->LayersWithCopyOutputRequest().back();
     layer->TakeCopyRequestsAndTransformToTarget(&requests_to_abort);
   }
   for (size_t i = 0; i < requests_to_abort.size(); ++i)
     requests_to_abort[i]->SendEmptyResult();
 
   // If we're making a frame to draw, it better have at least one render pass.
   DCHECK(!frame->render_passes.empty());
 
@@ skipping 262 matching lines @@
 
   DidModifyTilePriorities();
 }
 
 void LayerTreeHostImpl::DidModifyTilePriorities() {
   // Mark priorities as dirty and schedule a PrepareTiles().
   tile_priorities_dirty_ = true;
   client_->SetNeedsPrepareTilesOnImplThread();
 }
 
-scoped_ptr<RasterTilePriorityQueue> LayerTreeHostImpl::BuildRasterQueue(
+std::unique_ptr<RasterTilePriorityQueue> LayerTreeHostImpl::BuildRasterQueue(
     TreePriority tree_priority,
     RasterTilePriorityQueue::Type type) {
   TRACE_EVENT0("disabled-by-default-cc.debug",
                "LayerTreeHostImpl::BuildRasterQueue");
 
   return RasterTilePriorityQueue::Create(active_tree_->picture_layers(),
                                          pending_tree_
                                              ? pending_tree_->picture_layers()
                                              : std::vector<PictureLayerImpl*>(),
                                          tree_priority, type);
 }
 
-scoped_ptr<EvictionTilePriorityQueue> LayerTreeHostImpl::BuildEvictionQueue(
-    TreePriority tree_priority) {
+std::unique_ptr<EvictionTilePriorityQueue>
+LayerTreeHostImpl::BuildEvictionQueue(TreePriority tree_priority) {
   TRACE_EVENT0("disabled-by-default-cc.debug",
                "LayerTreeHostImpl::BuildEvictionQueue");
 
-  scoped_ptr<EvictionTilePriorityQueue> queue(new EvictionTilePriorityQueue);
+  std::unique_ptr<EvictionTilePriorityQueue> queue(
+      new EvictionTilePriorityQueue);
   queue->Build(active_tree_->picture_layers(),
                pending_tree_ ? pending_tree_->picture_layers()
                              : std::vector<PictureLayerImpl*>(),
                tree_priority);
   return queue;
 }
 
 void LayerTreeHostImpl::SetIsLikelyToRequireADraw(
     bool is_likely_to_require_a_draw) {
   // Proactively tell the scheduler that we expect to draw within each vsync
@@ skipping 352 matching lines @@
   if (active_tree_->hud_layer()) {
     TRACE_EVENT0("cc", "DrawLayers.UpdateHudTexture");
     active_tree_->hud_layer()->UpdateHudTexture(draw_mode,
                                                 resource_provider_.get());
   }
 
   if (draw_mode == DRAW_MODE_RESOURCELESS_SOFTWARE) {
     bool disable_picture_quad_image_filtering =
         IsActivelyScrolling() || animation_host_->NeedsAnimateLayers();
 
-    scoped_ptr<SoftwareRenderer> temp_software_renderer =
+    std::unique_ptr<SoftwareRenderer> temp_software_renderer =
         SoftwareRenderer::Create(this, &settings_.renderer_settings,
                                  output_surface_, NULL);
     temp_software_renderer->DrawFrame(
         &frame->render_passes, active_tree_->device_scale_factor(),
         DeviceViewport(), DeviceClip(), disable_picture_quad_image_filtering);
   } else {
     renderer_->DrawFrame(&frame->render_passes,
                          active_tree_->device_scale_factor(), DeviceViewport(),
                          DeviceClip(), false);
   }
@@ skipping 334 matching lines @@
   // If we have any picture layers, then by activating we also modified tile
   // priorities.
   if (!active_tree_->picture_layers().empty())
     DidModifyTilePriorities();
 
   client_->OnCanDrawStateChanged(CanDraw());
   client_->DidActivateSyncTree();
   if (!tree_activation_callback_.is_null())
     tree_activation_callback_.Run();
 
-  scoped_ptr<PendingPageScaleAnimation> pending_page_scale_animation =
+  std::unique_ptr<PendingPageScaleAnimation> pending_page_scale_animation =
       active_tree_->TakePendingPageScaleAnimation();
   if (pending_page_scale_animation) {
     StartPageScaleAnimation(
         pending_page_scale_animation->target_offset,
         pending_page_scale_animation->use_anchor,
         pending_page_scale_animation->scale,
         pending_page_scale_animation->duration);
   }
   // Activation can change the root scroll offset, so inform the synchronous
   // input handler.
@@ skipping 105 matching lines @@
   active_tree_->set_needs_update_draw_properties();
   if (pending_tree_)
     pending_tree_->set_needs_update_draw_properties();
   client_->UpdateRendererCapabilitiesOnImplThread();
 }
 
 void LayerTreeHostImpl::CreateTileManagerResources() {
   CreateResourceAndTileTaskWorkerPool(&tile_task_worker_pool_, &resource_pool_);
 
   if (use_gpu_rasterization_) {
-    image_decode_controller_ = make_scoped_ptr(new GpuImageDecodeController);
+    image_decode_controller_ = base::WrapUnique(new GpuImageDecodeController);
   } else {
     image_decode_controller_ =
-        make_scoped_ptr(new SoftwareImageDecodeController(
+        base::WrapUnique(new SoftwareImageDecodeController(
             settings_.renderer_settings.preferred_tile_format));
   }
 
   // TODO(vmpstr): Initialize tile task limit at ctor time.
   tile_manager_->SetResources(
       resource_pool_.get(), tile_task_worker_pool_->AsTileTaskRunner(),
       image_decode_controller_.get(),
       is_synchronous_single_threaded_ ? std::numeric_limits<size_t>::max()
                                       : settings_.scheduled_raster_task_limit,
       use_gpu_rasterization_);
   UpdateTileManagerMemoryPolicy(ActualManagedMemoryPolicy());
 }
 
 void LayerTreeHostImpl::CreateResourceAndTileTaskWorkerPool(
-    scoped_ptr<TileTaskWorkerPool>* tile_task_worker_pool,
-    scoped_ptr<ResourcePool>* resource_pool) {
+    std::unique_ptr<TileTaskWorkerPool>* tile_task_worker_pool,
+    std::unique_ptr<ResourcePool>* resource_pool) {
   DCHECK(GetTaskRunner());
   // TODO(vmpstr): Make this a DCHECK (or remove) when crbug.com/419086 is
   // resolved.
   CHECK(resource_provider_);
 
   // Pass the single-threaded synchronous task graph runner to the worker pool
   // if we're in synchronous single-threaded mode.
   TaskGraphRunner* task_graph_runner = task_graph_runner_;
   if (is_synchronous_single_threaded_) {
     DCHECK(!single_thread_synchronous_task_graph_runner_);
@@ skipping 69 matching lines @@
   if (request_ids.empty())
     return;
 
   base::TimeTicks start_time = start_of_main_frame_args.frame_time;
   base::TimeTicks end_time = expected_next_main_frame_args.frame_time;
   frame_timing_tracker_->SaveMainFrameTimeStamps(
       request_ids, start_time, end_time, active_tree_->source_frame_number());
 }
 
 void LayerTreeHostImpl::PostFrameTimingEvents(
-    scoped_ptr<FrameTimingTracker::CompositeTimingSet> composite_events,
-    scoped_ptr<FrameTimingTracker::MainFrameTimingSet> main_frame_events) {
+    std::unique_ptr<FrameTimingTracker::CompositeTimingSet> composite_events,
+    std::unique_ptr<FrameTimingTracker::MainFrameTimingSet> main_frame_events) {
   client_->PostFrameTimingEventsOnImplThread(std::move(composite_events),
                                              std::move(main_frame_events));
 }
 
 void LayerTreeHostImpl::CleanUpTileManagerAndUIResources() {
   ClearUIResources();
   tile_manager_->FinishTasksAndCleanUp();
   resource_pool_ = nullptr;
   tile_task_worker_pool_ = nullptr;
   single_thread_synchronous_task_graph_runner_ = nullptr;
@@ skipping 1050 matching lines @@
 static void CollectScrollDeltas(ScrollAndScaleSet* scroll_info,
                                 LayerImpl* root_layer) {
   if (!root_layer)
     return;
 
   return root_layer->layer_tree_impl()
       ->property_trees()
       ->scroll_tree.CollectScrollDeltas(scroll_info);
 }
 
-scoped_ptr<ScrollAndScaleSet> LayerTreeHostImpl::ProcessScrollDeltas() {
-  scoped_ptr<ScrollAndScaleSet> scroll_info(new ScrollAndScaleSet());
+std::unique_ptr<ScrollAndScaleSet> LayerTreeHostImpl::ProcessScrollDeltas() {
+  std::unique_ptr<ScrollAndScaleSet> scroll_info(new ScrollAndScaleSet());
 
   CollectScrollDeltas(scroll_info.get(), active_tree_->root_layer());
   scroll_info->page_scale_delta =
       active_tree_->page_scale_factor()->PullDeltaForMainThread();
   scroll_info->top_controls_delta =
       active_tree()->top_controls_shown_ratio()->PullDeltaForMainThread();
   scroll_info->elastic_overscroll_delta =
       active_tree_->elastic_overscroll()->PullDeltaForMainThread();
   scroll_info->swap_promises.swap(swap_promises_for_main_thread_scroll_update_);
 
@@ skipping 92 matching lines @@
   // still request an extra SetNeedsAnimate here.
   if (animated)
     SetNeedsOneBeginImplFrame();
   // TODO(crbug.com/551138): We could return true only if the animations are on
   // the active tree. There's no need to cause a draw to take place from
   // animations starting/ticking on the pending tree.
   return animated;
 }
 
 void LayerTreeHostImpl::UpdateAnimationState(bool start_ready_animations) {
-  scoped_ptr<AnimationEvents> events = animation_host_->CreateEvents();
+  std::unique_ptr<AnimationEvents> events = animation_host_->CreateEvents();
 
   const bool has_active_animations = animation_host_->UpdateAnimationState(
       start_ready_animations, events.get());
 
   if (!events->events_.empty())
     client_->PostAnimationEventsToMainThreadOnImplThread(std::move(events));
 
   if (has_active_animations)
     SetNeedsOneBeginImplFrame();
 }
 
 void LayerTreeHostImpl::ActivateAnimations() {
   const bool activated = animation_host_->ActivateAnimations();
   if (activated) {
     // Activating an animation changes layer draw properties, such as
     // screen_space_transform_is_animating. So when we see a new animation get
     // activated, we need to update the draw properties on the active tree.
     active_tree()->set_needs_update_draw_properties();
     // Request another frame to run the next tick of the animation.
     SetNeedsOneBeginImplFrame();
   }
 }
 
 std::string LayerTreeHostImpl::LayerTreeAsJson() const {
   std::string str;
   if (active_tree_->root_layer()) {
-    scoped_ptr<base::Value> json(active_tree_->root_layer()->LayerTreeAsJson());
+    std::unique_ptr<base::Value> json(
+        active_tree_->root_layer()->LayerTreeAsJson());
     base::JSONWriter::WriteWithOptions(
         *json, base::JSONWriter::OPTIONS_PRETTY_PRINT, &str);
   }
   return str;
 }
 
 void LayerTreeHostImpl::RegisterScrollbarAnimationController(
     int scroll_layer_id) {
   if (settings().scrollbar_animator == LayerTreeSettings::NO_ANIMATOR)
     return;
@@ skipping 78 matching lines @@
 BeginFrameArgs LayerTreeHostImpl::CurrentBeginFrameArgs() const {
   // TODO(mithro): Replace call with current_begin_frame_tracker_.Current()
   // once all calls which happens outside impl frames are fixed.
   return current_begin_frame_tracker_.DangerousMethodCurrentOrLast();
 }
 
 base::TimeDelta LayerTreeHostImpl::CurrentBeginFrameInterval() const {
   return current_begin_frame_tracker_.Interval();
 }
 
-scoped_ptr<base::trace_event::ConvertableToTraceFormat>
+std::unique_ptr<base::trace_event::ConvertableToTraceFormat>
 LayerTreeHostImpl::AsValueWithFrame(FrameData* frame) const {
-  scoped_ptr<base::trace_event::TracedValue> state(
+  std::unique_ptr<base::trace_event::TracedValue> state(
       new base::trace_event::TracedValue());
   AsValueWithFrameInto(frame, state.get());
   return std::move(state);
 }
 
 void LayerTreeHostImpl::AsValueWithFrameInto(
     FrameData* frame,
     base::trace_event::TracedValue* state) const {
   if (this->pending_tree_) {
     state->BeginDictionary("activation_state");
@@ skipping 145 matching lines @@
   std::set<UIResourceId>::iterator found_in_evicted =
       evicted_ui_resources_.find(uid);
   if (found_in_evicted == evicted_ui_resources_.end())
     return;
   evicted_ui_resources_.erase(found_in_evicted);
   if (evicted_ui_resources_.empty())
     client_->OnCanDrawStateChanged(CanDraw());
 }
 
 void LayerTreeHostImpl::ScheduleMicroBenchmark(
-    scoped_ptr<MicroBenchmarkImpl> benchmark) {
+    std::unique_ptr<MicroBenchmarkImpl> benchmark) {
   micro_benchmark_controller_.ScheduleRun(std::move(benchmark));
 }
 
 void LayerTreeHostImpl::InsertSwapPromiseMonitor(SwapPromiseMonitor* monitor) {
   swap_promise_monitor_.insert(monitor);
 }
 
 void LayerTreeHostImpl::RemoveSwapPromiseMonitor(SwapPromiseMonitor* monitor) {
   swap_promise_monitor_.erase(monitor);
 }
@@ skipping 199 matching lines @@
   return task_runner_provider_->HasImplThread();
 }
 
 bool LayerTreeHostImpl::CommitToActiveTree() const {
   // In single threaded mode we skip the pending tree and commit directly to the
   // active tree.
   return !task_runner_provider_->HasImplThread();
 }
 
 }  // namespace cc