Remove SurfaceFactory::Create and SurfaceFactory::Destroy

content/browser/frame_host/render_widget_host_view_child_frame.cc

 // Copyright 2014 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 "content/browser/frame_host/render_widget_host_view_child_frame.h"
 
 #include <algorithm>
 #include <utility>
 #include <vector>
 
@@ skipping 51 matching lines @@
       begin_frame_source_(nullptr),
       weak_factory_(this) {
   id_allocator_.reset(new cc::SurfaceIdAllocator());
   auto* manager = GetSurfaceManager();
   manager->RegisterFrameSinkId(frame_sink_id_);
   surface_factory_ =
       base::MakeUnique<cc::SurfaceFactory>(frame_sink_id_, manager, this);
 }
 
 RenderWidgetHostViewChildFrame::~RenderWidgetHostViewChildFrame() {
-  if (local_frame_id_.is_valid())
-    surface_factory_->Destroy(local_frame_id_);
-
+  surface_factory_.reset();

[Fady Samuel, 2016/11/11 19:47:57]

surface_factory_->EvictFrame();

   if (GetSurfaceManager())
     GetSurfaceManager()->InvalidateFrameSinkId(frame_sink_id_);
 }
 
 void RenderWidgetHostViewChildFrame::Init() {
   RegisterFrameSinkId();
   host_->SetView(this);
   GetTextInputManager();
 }
 
@@ skipping 308 matching lines @@
     ClearCompositorSurfaceIfNecessary();
     // If the renderer changed its frame sink, reset the surface factory to
     // avoid returning stale resources.
     if (compositor_frame_sink_id != last_compositor_frame_sink_id_)
       surface_factory_->Reset();
     last_compositor_frame_sink_id_ = compositor_frame_sink_id;
     current_surface_size_ = frame_size;
     current_surface_scale_factor_ = scale_factor;
   }
 
+  bool allocated_new_local_frame_id = false;
   if (!local_frame_id_.is_valid()) {
     local_frame_id_ = id_allocator_->GenerateId();
-    surface_factory_->Create(local_frame_id_);
+    allocated_new_local_frame_id = true;
+  }
 
+  cc::SurfaceFactory::DrawCallback ack_callback =
+      base::Bind(&RenderWidgetHostViewChildFrame::SurfaceDrawn, AsWeakPtr(),
+                 compositor_frame_sink_id);
+  ack_pending_count_++;
+  // If this value grows very large, something is going wrong.
+  DCHECK_LT(ack_pending_count_, 1000U);
+  surface_factory_->SubmitCompositorFrame(local_frame_id_, std::move(frame),
+                                          ack_callback);
+
+  if (allocated_new_local_frame_id) {
     cc::SurfaceSequence sequence =
         cc::SurfaceSequence(frame_sink_id_, next_surface_sequence_++);
     // The renderer process will satisfy this dependency when it creates a
     // SurfaceLayer.
     cc::SurfaceManager* manager = GetSurfaceManager();
     manager->GetSurfaceForId(cc::SurfaceId(frame_sink_id_, local_frame_id_))
         ->AddDestructionDependency(sequence);
     frame_connector_->SetChildFrameSurface(
         cc::SurfaceId(frame_sink_id_, local_frame_id_), frame_size,
         scale_factor, sequence);
   }
-
-  cc::SurfaceFactory::DrawCallback ack_callback =
-      base::Bind(&RenderWidgetHostViewChildFrame::SurfaceDrawn, AsWeakPtr(),
-                 compositor_frame_sink_id);
-  ack_pending_count_++;
-  // If this value grows very large, something is going wrong.
-  DCHECK_LT(ack_pending_count_, 1000U);
-  surface_factory_->SubmitCompositorFrame(local_frame_id_, std::move(frame),
-                                          ack_callback);
-
   ProcessFrameSwappedCallbacks();
 }
 
 void RenderWidgetHostViewChildFrame::ProcessFrameSwappedCallbacks() {
   // We only use callbacks once, therefore we make a new list for registration
   // before we start, and discard the old list entries when we are done.
   FrameSwappedCallbackList process_callbacks;
   process_callbacks.swap(frame_swapped_callbacks_);
   for (std::unique_ptr<base::Closure>& callback : process_callbacks)
     callback->Run();
@@ skipping 281 matching lines @@
 }
 
 BrowserAccessibilityManager*
 RenderWidgetHostViewChildFrame::CreateBrowserAccessibilityManager(
     BrowserAccessibilityDelegate* delegate, bool for_root_frame) {
   return BrowserAccessibilityManager::Create(
       BrowserAccessibilityManager::GetEmptyDocument(), delegate);
 }
 
 void RenderWidgetHostViewChildFrame::ClearCompositorSurfaceIfNecessary() {
-  if (local_frame_id_.is_valid())
-    surface_factory_->Destroy(local_frame_id_);

[Fady Samuel, 2016/11/11 19:47:57]

surface_factory_->EvictFrame();

   local_frame_id_ = cc::LocalFrameId();
 }
 
 bool RenderWidgetHostViewChildFrame::IsChildFrameForTesting() const {
   return true;
 }
 
 cc::SurfaceId RenderWidgetHostViewChildFrame::SurfaceIdForTesting() const {
   return cc::SurfaceId(frame_sink_id_, local_frame_id_);
 };
 
 }  // namespace content