Implementation of the GreenWeb language extensions.

cc/output/latency_info_swap_promise.cc

Index: cc/output/latency_info_swap_promise.cc
diff --git a/cc/output/latency_info_swap_promise.cc b/cc/output/latency_info_swap_promise.cc
index 3b267454076e574b01a510403395d2f3b08aec3c..ee15e10856e9b6cda4f2921bec15cb98b1e8fce3 100644
--- a/cc/output/latency_info_swap_promise.cc
+++ b/cc/output/latency_info_swap_promise.cc
@@ -4,8 +4,12 @@
 
 #include "cc/output/latency_info_swap_promise.h"
 
+#include <iostream>
+
 #include "base/logging.h"
+#include "base/threading/platform_thread.h"
 #include "base/trace_event/trace_event.h"
+#include "content/renderer/greenweb_latency_tracking.h"
 
 namespace {
 ui::LatencyComponentType DidNotSwapReasonToLatencyComponentType(
@@ -57,6 +61,34 @@ void LatencyInfoSwapPromise::OnCommit() {
                          TRACE_ID_DONT_MANGLE(TraceId()),
                          TRACE_EVENT_FLAG_FLOW_IN | TRACE_EVENT_FLAG_FLOW_OUT,
                          "step", "HandleInputEventMainCommit");
+
+  int64 trace_id = TraceId();
+  if (InputLatencyMap.find(trace_id) != InputLatencyMap.end()) {
+    int64 dom_node = InputLatencyMap[trace_id].dom_node;
+    if (dom_node) {
+      base::TimeTicks layout_end_ts = base::TimeTicks::Now();
+      base::TimeDelta latency = layout_end_ts - InputLatencyMap[trace_id].callback_start;
+      InputLatencyMap[trace_id].latency = latency.InMilliseconds();
+
+      DOMLatencyMap[dom_node].latency = InputLatencyMap[trace_id].latency;
+
+      content::process_freq_stat(&(InputLatencyMap[trace_id].FreqStatStartMap), &(DOMLatencyMap[dom_node].FreqStatMap));
+
+#ifdef EBS_DEBUG_TRACE_EVENT
+      TRACE_EVENT2("devtools.timeline", "GreenWeb:StyleLayout",
+                   "trace_id", TraceId(),
+                   "latency", DOMLatencyMap[dom_node].latency);
+      std::cout << "Thd: " << base::PlatformThread::CurrentId() <<
+                    " (" << base::PlatformThread::GetName() << ")" <<
+                    " StyleLayout "
+                    " trace_id " << trace_id <<
+                    " dom_node " << dom_node <<
+                    " latency " << DOMLatencyMap[dom_node].latency << std::endl;
+#endif
+    }
+    // Erase this trace_id because it will not used in the future
+    InputLatencyMap.erase(trace_id);
+  }
 }
 
 }  // namespace cc