Track slow paths in DisplayItemList

third_party/WebKit/Source/platform/graphics/paint/PaintArtifact.cpp

Index: third_party/WebKit/Source/platform/graphics/paint/PaintArtifact.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/paint/PaintArtifact.cpp b/third_party/WebKit/Source/platform/graphics/paint/PaintArtifact.cpp
index 96d45d912247d4a489f746ae5f74524596d26a55..c53a383c3f4f19e5aa81c379060d49fb19ae910a 100644
--- a/third_party/WebKit/Source/platform/graphics/paint/PaintArtifact.cpp
+++ b/third_party/WebKit/Source/platform/graphics/paint/PaintArtifact.cpp
@@ -46,38 +46,35 @@ void ComputeChunkBoundsAndOpaqueness(const DisplayItemList& display_items,
 
 }  // namespace
 
-PaintArtifact::PaintArtifact()
-    : display_item_list_(0), is_suitable_for_gpu_rasterization_(true) {}
+PaintArtifact::PaintArtifact() : display_item_list_(0) {}
 
 PaintArtifact::PaintArtifact(DisplayItemList display_items,
                              Vector<PaintChunk> paint_chunks,
-                             bool is_suitable_for_gpu_rasterization_arg)
+                             int num_slow_paths)
     : display_item_list_(std::move(display_items)),
       paint_chunks_(std::move(paint_chunks)),
-      is_suitable_for_gpu_rasterization_(
-          is_suitable_for_gpu_rasterization_arg) {
+      num_slow_paths_(num_slow_paths) {
   ComputeChunkBoundsAndOpaqueness(display_item_list_, paint_chunks_);
 }
 
 PaintArtifact::PaintArtifact(PaintArtifact&& source)
     : display_item_list_(std::move(source.display_item_list_)),
       paint_chunks_(std::move(source.paint_chunks_)),
-      is_suitable_for_gpu_rasterization_(
-          source.is_suitable_for_gpu_rasterization_) {}
+      num_slow_paths_(source.num_slow_paths_) {}
 
 PaintArtifact::~PaintArtifact() {}
 
 PaintArtifact& PaintArtifact::operator=(PaintArtifact&& source) {
   display_item_list_ = std::move(source.display_item_list_);
   paint_chunks_ = std::move(source.paint_chunks_);
-  is_suitable_for_gpu_rasterization_ =
-      source.is_suitable_for_gpu_rasterization_;
+  num_slow_paths_ = source.num_slow_paths_;
   return *this;
 }
 
 void PaintArtifact::Reset() {
   display_item_list_.Clear();
   paint_chunks_.clear();
+  num_slow_paths_ = 0;
 }
 
 size_t PaintArtifact::ApproximateUnsharedMemoryUsage() const {
@@ -121,7 +118,7 @@ void PaintArtifact::AppendToWebDisplayItemList(
   TRACE_EVENT0("blink,benchmark", "PaintArtifact::appendToWebDisplayItemList");
   for (const DisplayItem& item : display_item_list_)
     item.AppendToWebDisplayItemList(visual_rect_offset, list);
-  list->SetIsSuitableForGpuRasterization(IsSuitableForGpuRasterization());
+  list->SetNumSlowPaths(num_slow_paths_);
 }
 
 }  // namespace blink