[not for review] Add Draw entries to window Performance Timeline

cc/blink/web_layer_impl.cc

Index: cc/blink/web_layer_impl.cc
diff --git a/cc/blink/web_layer_impl.cc b/cc/blink/web_layer_impl.cc
index c1f67fbed3af08fbe712b402c8c9e47b58a24ddb..ad393b39e30f6567aa1024703dd90f5e804fadca 100644
--- a/cc/blink/web_layer_impl.cc
+++ b/cc/blink/web_layer_impl.cc
@@ -4,6 +4,8 @@
 
 #include "cc/blink/web_layer_impl.h"
 
+#include <vector>
+
 #include "base/bind.h"
 #include "base/debug/trace_event_impl.h"
 #include "base/lazy_instance.h"
@@ -349,6 +351,28 @@ WebVector<WebRect> WebLayerImpl::nonFastScrollableRegion() const {
   return result;
 }
 
+void WebLayerImpl::setSmoothnessTimingRequests(
+    const WebVector<std::pair<int64_t, WebRect> >& rects) {
+  std::vector<std::pair<int64_t, gfx::Rect> > gfxRects(rects.size());
+  for (size_t i = 0; i < rects.size(); ++i) {
+    gfxRects[i] = std::make_pair(rects[i].first, gfx::Rect(rects[i].second));
+  }
+  layer_->SetSmoothnessTimingRequests(gfxRects);
+}
+
+WebVector<std::pair<int64_t, WebRect> > WebLayerImpl::smoothnessTimingRequests()
+    const {
+  std::vector<std::pair<int64_t, gfx::Rect> > rects =
+      layer_->smoothness_timing_requests();
+  size_t num_rects = rects.size();
+  WebVector<std::pair<int64_t, WebRect> > result(num_rects);
+  for (size_t i = 0; i < num_rects; ++i) {
+    WebRect rect(rects[i].second);
+    result[i] = std::make_pair(rects[i].first, rect);
+  }
+  return result;
+}
+
 void WebLayerImpl::setTouchEventHandlerRegion(const WebVector<WebRect>& rects) {
   cc::Region region;
   for (size_t i = 0; i < rects.size(); ++i)