Update from https://crrev.com/317530

ui/events/latency_info.cc

 // Copyright 2013 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 "base/json/json_writer.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/stringprintf.h"
 #include "base/trace_event/trace_event.h"
 #include "ui/events/latency_info.h"
 
 #include <algorithm>
 
 namespace {
 
 const size_t kMaxLatencyInfoNumber = 100;
 
 const char* GetComponentName(ui::LatencyComponentType type) {
 #define CASE_TYPE(t) case ui::t:  return #t
   switch (type) {
     CASE_TYPE(INPUT_EVENT_LATENCY_BEGIN_RWH_COMPONENT);
     CASE_TYPE(INPUT_EVENT_LATENCY_BEGIN_PLUGIN_COMPONENT);
     CASE_TYPE(INPUT_EVENT_LATENCY_BEGIN_SCROLL_UPDATE_MAIN_COMPONENT);
-    CASE_TYPE(INPUT_EVENT_LATENCY_SCROLL_UPDATE_RWH_COMPONENT);
     CASE_TYPE(INPUT_EVENT_LATENCY_SCROLL_UPDATE_ORIGINAL_COMPONENT);
+    CASE_TYPE(INPUT_EVENT_LATENCY_FIRST_SCROLL_UPDATE_ORIGINAL_COMPONENT);
     CASE_TYPE(INPUT_EVENT_LATENCY_ORIGINAL_COMPONENT);
     CASE_TYPE(INPUT_EVENT_LATENCY_UI_COMPONENT);
-    CASE_TYPE(INPUT_EVENT_LATENCY_RENDERING_SCHEDULED_COMPONENT);
+    CASE_TYPE(INPUT_EVENT_LATENCY_RENDERING_SCHEDULED_MAIN_COMPONENT);
+    CASE_TYPE(INPUT_EVENT_LATENCY_RENDERING_SCHEDULED_IMPL_COMPONENT);
     CASE_TYPE(INPUT_EVENT_LATENCY_FORWARD_SCROLL_UPDATE_TO_MAIN_COMPONENT);
-    CASE_TYPE(INPUT_EVENT_LATENCY_ACKED_TOUCH_COMPONENT);
+    CASE_TYPE(INPUT_EVENT_LATENCY_ACK_RWH_COMPONENT);
     CASE_TYPE(WINDOW_SNAPSHOT_FRAME_NUMBER_COMPONENT);
     CASE_TYPE(WINDOW_OLD_SNAPSHOT_FRAME_NUMBER_COMPONENT);
-    CASE_TYPE(INPUT_EVENT_BROWSER_COMPOSITE_COMPONENT);
-    CASE_TYPE(INPUT_EVENT_BROWSER_SWAP_BUFFER_COMPONENT);
+    CASE_TYPE(TAB_SHOW_COMPONENT);
+    CASE_TYPE(INPUT_EVENT_LATENCY_RENDERER_SWAP_COMPONENT);
+    CASE_TYPE(INPUT_EVENT_BROWSER_RECEIVED_RENDERER_SWAP_COMPONENT);
     CASE_TYPE(INPUT_EVENT_GPU_SWAP_BUFFER_COMPONENT);
     CASE_TYPE(INPUT_EVENT_LATENCY_TERMINATED_MOUSE_COMPONENT);
     CASE_TYPE(INPUT_EVENT_LATENCY_TERMINATED_TOUCH_COMPONENT);
     CASE_TYPE(INPUT_EVENT_LATENCY_TERMINATED_GESTURE_COMPONENT);
     CASE_TYPE(INPUT_EVENT_LATENCY_TERMINATED_FRAME_SWAP_COMPONENT);
     CASE_TYPE(INPUT_EVENT_LATENCY_TERMINATED_COMMIT_FAILED_COMPONENT);
     CASE_TYPE(INPUT_EVENT_LATENCY_TERMINATED_COMMIT_NO_UPDATE_COMPONENT);
     CASE_TYPE(INPUT_EVENT_LATENCY_TERMINATED_SWAP_FAILED_COMPONENT);
     CASE_TYPE(INPUT_EVENT_LATENCY_TERMINATED_PLUGIN_COMPONENT);
     default:
@@ skipping 20 matching lines @@
   }
 }
 
 bool IsBeginComponent(ui::LatencyComponentType type) {
   return (type == ui::INPUT_EVENT_LATENCY_BEGIN_RWH_COMPONENT ||
           type == ui::INPUT_EVENT_LATENCY_BEGIN_PLUGIN_COMPONENT ||
           type == ui::INPUT_EVENT_LATENCY_BEGIN_SCROLL_UPDATE_MAIN_COMPONENT);
 }
 
 // This class is for converting latency info to trace buffer friendly format.
-class LatencyInfoTracedValue : public base::trace_event::ConvertableToTraceFormat {
+class LatencyInfoTracedValue
+    : public base::trace_event::ConvertableToTraceFormat {
  public:
   static scoped_refptr<ConvertableToTraceFormat> FromValue(
       scoped_ptr<base::Value> value);
 
   void AppendAsTraceFormat(std::string* out) const override;
 
  private:
   explicit LatencyInfoTracedValue(base::Value* value);
   ~LatencyInfoTracedValue() override;
 
@@ skipping 161 matching lines @@
         ts = base::TimeTicks::NowFromSystemTraceTime().ToInternalValue();
       }
       TRACE_EVENT_ASYNC_BEGIN_WITH_TIMESTAMP0(
           "benchmark",
           "InputLatency",
           TRACE_ID_DONT_MANGLE(trace_id),
           ts);
     }
 
     TRACE_EVENT_FLOW_BEGIN0(
-        "input", "LatencyInfo.Flow", TRACE_ID_DONT_MANGLE(trace_id));
+        "input,benchmark", "LatencyInfo.Flow", TRACE_ID_DONT_MANGLE(trace_id));
   }
 
   LatencyMap::key_type key = std::make_pair(component, id);
   LatencyMap::iterator it = latency_components.find(key);
   if (it == latency_components.end()) {
     LatencyComponent info = {component_sequence_number, time, event_count};
     latency_components[key] = info;
   } else {
     it->second.sequence_number = std::max(component_sequence_number,
                                           it->second.sequence_number);
@@ skipping 14 matching lines @@
     terminated = true;
 
     if (*benchmark_enabled) {
       TRACE_EVENT_ASYNC_END1("benchmark",
                              "InputLatency",
                              TRACE_ID_DONT_MANGLE(trace_id),
                              "data", AsTraceableData(*this));
     }
 
     TRACE_EVENT_FLOW_END0(
-        "input", "LatencyInfo.Flow", TRACE_ID_DONT_MANGLE(trace_id));
+        "input,benchmark", "LatencyInfo.Flow", TRACE_ID_DONT_MANGLE(trace_id));
   }
 }
 
 bool LatencyInfo::FindLatency(LatencyComponentType type,
                               int64 id,
                               LatencyComponent* output) const {
   LatencyMap::const_iterator it = latency_components.find(
       std::make_pair(type, id));
   if (it == latency_components.end())
     return false;
@@ skipping 20 matching lines @@
 }
 
 void LatencyInfo::TraceEventType(const char* event_type) {
   TRACE_EVENT_ASYNC_STEP_INTO0("benchmark",
                                "InputLatency",
                                TRACE_ID_DONT_MANGLE(trace_id),
                                event_type);
 }
 
 }  // namespace ui