Convert performance monitor to the subscription model.

third_party/WebKit/Source/core/inspector/InspectorLogAgent.h

Index: third_party/WebKit/Source/core/inspector/InspectorLogAgent.h
diff --git a/third_party/WebKit/Source/core/inspector/InspectorLogAgent.h b/third_party/WebKit/Source/core/inspector/InspectorLogAgent.h
index d9de42d89b6b8c69bd00d2b15d556be375a061c4..d4ef9bfd3a940f496dcf34a9636447a5ff9abf68 100644
--- a/third_party/WebKit/Source/core/inspector/InspectorLogAgent.h
+++ b/third_party/WebKit/Source/core/inspector/InspectorLogAgent.h
@@ -6,6 +6,7 @@
 #define InspectorLogAgent_h
 
 #include "core/CoreExport.h"
+#include "core/frame/PerformanceMonitor.h"
 #include "core/inspector/InspectorBaseAgent.h"
 #include "core/inspector/protocol/Log.h"
 
@@ -13,10 +14,11 @@ namespace blink {
 
 class ConsoleMessage;
 class ConsoleMessageStorage;
-class PerformanceMonitor;
 
 class CORE_EXPORT InspectorLogAgent
-    : public InspectorBaseAgent<protocol::Log::Metainfo> {
+    : public InspectorBaseAgent<protocol::Log::Metainfo>,
+      public PerformanceMonitor::Client {
+  USING_GARBAGE_COLLECTED_MIXIN(InspectorLogAgent);
   WTF_MAKE_NONCOPYABLE(InspectorLogAgent);
 
  public:
@@ -33,9 +35,22 @@ class CORE_EXPORT InspectorLogAgent
   Response enable() override;
   Response disable() override;
   Response clear() override;
-  Response setReportViolationsEnabled(bool) override;
+  Response startViolationsReport(
+      std::unique_ptr<protocol::Array<protocol::Log::ViolationSetting>>)
+      override;
+  Response stopViolationsReport() override;
 
  private:
+  // PerformanceMonitor::Client implementation.
+  void reportLongTask(double startTime,
+                      double endTime,
+                      const HeapHashSet<Member<Frame>>& contextFrames) override;
+  void reportLongLayout(double duration) override;
+  void reportGenericViolation(PerformanceMonitor::Violation,
+                              const String& text,
+                              double time,
+                              SourceLocation*) override;
+
   bool m_enabled;
   Member<ConsoleMessageStorage> m_storage;
   Member<PerformanceMonitor> m_performanceMonitor;