Revert of DevTools: do not use RAII for sync native breakpoints, reuse AsyncTask where possible.

third_party/WebKit/Source/core/loader/DocumentLoader.cpp

Index: third_party/WebKit/Source/core/loader/DocumentLoader.cpp
diff --git a/third_party/WebKit/Source/core/loader/DocumentLoader.cpp b/third_party/WebKit/Source/core/loader/DocumentLoader.cpp
index cf0048546eac575ef78b8bae520ae61e643e4ab6..bf3600527ec6d7b60dbd5f45e2e1ee851a01001f 100644
--- a/third_party/WebKit/Source/core/loader/DocumentLoader.cpp
+++ b/third_party/WebKit/Source/core/loader/DocumentLoader.cpp
@@ -29,8 +29,6 @@
 
 #include "core/loader/DocumentLoader.h"
 
-#include <memory>
-
 #include "core/dom/Document.h"
 #include "core/dom/WeakIdentifierMap.h"
 #include "core/events/Event.h"
@@ -44,7 +42,6 @@
 #include "core/html/parser/TextResourceDecoder.h"
 #include "core/inspector/ConsoleMessage.h"
 #include "core/inspector/InspectorInstrumentation.h"
-#include "core/inspector/MainThreadDebugger.h"
 #include "core/loader/FrameFetchContext.h"
 #include "core/loader/FrameLoader.h"
 #include "core/loader/FrameLoaderClient.h"
@@ -77,6 +74,7 @@
 #include "wtf/Assertions.h"
 #include "wtf/AutoReset.h"
 #include "wtf/text/WTFString.h"
+#include <memory>
 
 namespace blink {
 
@@ -304,7 +302,7 @@
 void DocumentLoader::finishedLoading(double finishTime) {
   DCHECK(m_frame->loader().stateMachine()->creatingInitialEmptyDocument() ||
          !m_frame->page()->suspended() ||
-         MainThreadDebugger::instance()->isPaused());
+         InspectorInstrumentation::isDebuggerPaused(m_frame));
 
   double responseEndTime = finishTime;
   if (!responseEndTime)