Revert of DevTools: add the logging aspect into the PerformanceMonitor

third_party/WebKit/Source/core/inspector/InspectorPageAgent.cpp

Index: third_party/WebKit/Source/core/inspector/InspectorPageAgent.cpp
diff --git a/third_party/WebKit/Source/core/inspector/InspectorPageAgent.cpp b/third_party/WebKit/Source/core/inspector/InspectorPageAgent.cpp
index a06b1a98f70ebb35fc1471817134d44117287920..cb2a9de69b10ec297e673e02b7b201f71ee825f3 100644
--- a/third_party/WebKit/Source/core/inspector/InspectorPageAgent.cpp
+++ b/third_party/WebKit/Source/core/inspector/InspectorPageAgent.cpp
@@ -81,6 +81,8 @@
     "pageAgentScriptsToEvaluateOnLoad";
 static const char screencastEnabled[] = "screencastEnabled";
 static const char autoAttachToCreatedPages[] = "autoAttachToCreatedPages";
+static const char blockedEventsWarningThreshold[] =
+    "blockedEventsWarningThreshold";
 static const char overlaySuspended[] = "overlaySuspended";
 static const char overlayMessage[] = "overlayMessage";
 }
@@ -369,6 +371,8 @@
 void InspectorPageAgent::restore() {
   if (m_state->booleanProperty(PageAgentState::pageAgentEnabled, false))
     enable();
+  setBlockedEventsWarningThreshold(m_state->doubleProperty(
+      PageAgentState::blockedEventsWarningThreshold, 0.0));
   if (m_client) {
     String overlayMessage;
     m_state->getString(PageAgentState::overlayMessage, &overlayMessage);
@@ -841,6 +845,16 @@
   return Response::OK();
 }
 
+Response InspectorPageAgent::setBlockedEventsWarningThreshold(
+    double threshold) {
+  m_state->setDouble(PageAgentState::blockedEventsWarningThreshold, threshold);
+  FrameHost* host = m_inspectedFrames->root()->host();
+  if (!host)
+    return Response::Error("Host not found");
+  host->settings().setBlockedMainThreadEventsWarningThreshold(threshold);
+  return Response::OK();
+}
+
 Response InspectorPageAgent::getLayoutMetrics(
     std::unique_ptr<protocol::Page::LayoutViewport>* outLayoutViewport,
     std::unique_ptr<protocol::Page::VisualViewport>* outVisualViewport) {