Remove window.chrome.gpuBenchmarking.beginWindowSnapshotPNG

content/browser/renderer_host/render_widget_host_latency_tracker.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/renderer_host/render_widget_host_latency_tracker.h"
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 
@@ skipping 241 matching lines @@
 
 // LatencyComponents generated in the renderer must have component IDs
 // provided to them by the browser process. This function adds the correct
 // component ID where necessary.
 void AddLatencyInfoComponentIds(LatencyInfo* latency,
                                 int64 latency_component_id) {
   LatencyInfo::LatencyMap new_components;
   auto lc = latency->latency_components.begin();
   while (lc != latency->latency_components.end()) {
     ui::LatencyComponentType component_type = lc->first.first;
-    if (component_type == ui::WINDOW_SNAPSHOT_FRAME_NUMBER_COMPONENT ||
-        component_type == ui::WINDOW_OLD_SNAPSHOT_FRAME_NUMBER_COMPONENT) {
+    if (component_type == ui::WINDOW_SNAPSHOT_FRAME_NUMBER_COMPONENT) {
       // Generate a new component entry with the correct component ID
       auto key = std::make_pair(component_type, latency_component_id);
       new_components[key] = lc->second;
 
       // Remove the old entry
       latency->latency_components.erase(lc++);
     } else {
       ++lc;
     }
   }
@@ skipping 158 matching lines @@
   // cause regressions.
   return std::max(
       browser_composite_latency_history_.Percentile(
           kBrowserCompositeLatencyEstimationPercentile) *
           kBrowserCompositeLatencyEstimationSlack,
       base::TimeDelta::FromMicroseconds(
           (1.0f * base::Time::kMicrosecondsPerSecond) / (3.0f * 60)));
 }
 
 }  // namespace content