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

third_party/WebKit/Source/bindings/core/v8/ScriptController.cpp

 /*
  * Copyright (C) 2008, 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2014 Opera Software ASA. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
@@ skipping 109 matching lines @@
 }  // namespace
 
 v8::Local<v8::Value> ScriptController::executeScriptAndReturnValue(
     v8::Local<v8::Context> context,
     const ScriptSourceCode& source,
     AccessControlStatus accessControlStatus) {
   TRACE_EVENT1("devtools.timeline", "EvaluateScript", "data",
                InspectorEvaluateScriptEvent::data(
                    frame(), source.url().getString(), source.startPosition()));
   InspectorInstrumentation::NativeBreakpoint nativeBreakpoint(
-      frame()->document(), "scriptFirstStatement", false);
+      frame()->document(), "scriptFirstStatement");
 
   v8::Local<v8::Value> result;
   {
     V8CacheOptions v8CacheOptions =
         cacheOptions(source.resource(), frame()->settings());
 
     // Isolate exceptions that occur when compiling and executing
     // the code. These exceptions should not interfere with
     // javascript code we might evaluate from C++ when returning
     // from here.
@@ skipping 240 matching lines @@
     for (size_t i = 0; i < resultArray->Length(); ++i) {
       v8::Local<v8::Value> value;
       if (!resultArray->Get(scriptState->context(), i).ToLocal(&value))
         return;
       results->push_back(value);
     }
   }
 }
 
 }  // namespace blink