Revert of Use v8::MicrotasksScope internally in V8RecursionScope.

third_party/WebKit/Source/modules/cachestorage/CacheTest.cpp

 // 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 "modules/cachestorage/Cache.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptFunction.h"
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
@@ skipping 231 matching lines @@
         Request* request = Request::create(scriptState(), url, exceptionState);
         EXPECT_FALSE(exceptionState.hadException());
         return exceptionState.hadException() ? 0 : request;
     }
 
     // Convenience methods for testing the returned promises.
     ScriptValue getRejectValue(ScriptPromise& promise)
     {
         ScriptValue onReject;
         promise.then(UnreachableFunction::create(scriptState()), TestFunction::create(scriptState(), &onReject));
-        v8::MicrotasksScope::PerformCheckpoint(isolate());
+        isolate()->RunMicrotasks();
         return onReject;
     }
 
     std::string getRejectString(ScriptPromise& promise)
     {
         ScriptValue onReject = getRejectValue(promise);
         return toCoreString(onReject.v8Value()->ToString(context()).ToLocalChecked()).ascii().data();
     }
 
     ScriptValue getResolveValue(ScriptPromise& promise)
     {
         ScriptValue onResolve;
         promise.then(TestFunction::create(scriptState(), &onResolve), UnreachableFunction::create(scriptState()));
-        v8::MicrotasksScope::PerformCheckpoint(isolate());
+        isolate()->RunMicrotasks();
         return onResolve;
     }
 
     std::string getResolveString(ScriptPromise& promise)
     {
         ScriptValue onResolve = getResolveValue(promise);
         return toCoreString(onResolve.v8Value()->ToString(context()).ToLocalChecked()).ascii().data();
     }
 
     ExceptionState& exceptionState()
@@ skipping 379 matching lines @@
 
     ScriptPromise addResult = cache->add(scriptState(), requestToRequestInfo(request), exceptionState());
 
     EXPECT_EQ(kNotImplementedString, getRejectString(addResult));
     EXPECT_EQ(1, fetcher->fetchCount());
     EXPECT_EQ("dispatchBatch", testCache->getAndClearLastErrorWebCacheMethodCalled());
 }
 
 } // namespace
 } // namespace blink