Revert of Remove V8RecrusionScope, cleanup call sites.

third_party/WebKit/Source/bindings/core/v8/Microtask.h

Index: third_party/WebKit/Source/bindings/core/v8/Microtask.h
diff --git a/third_party/WebKit/Source/bindings/core/v8/Microtask.h b/third_party/WebKit/Source/bindings/core/v8/Microtask.h
deleted file mode 100644
index 89ecd0f899ceee9cd7ffbbbd9e77cb0c5e1d0dc8..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/bindings/core/v8/Microtask.h
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * Copyright (C) 2013 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer
- *    in the documentation and/or other materials provided with the
- *    distribution.
- * 3. Neither the name of Google Inc. nor the names of its contributors
- *    may be used to endorse or promote products derived from this
- *    software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef Microtask_h
-#define Microtask_h
-
-#include "core/CoreExport.h"
-#include "public/platform/WebTaskRunner.h"
-#include "wtf/Allocator.h"
-#include "wtf/Functional.h"
-#include "wtf/PassOwnPtr.h"
-#include <v8.h>
-
-namespace blink {
-
-// C++ calls into script contexts which are "owned" by blink (created in a
-// process where WebKit.cpp initializes v8) must declare their type:
-//
-//   1. Calls into page/author script from a frame
-//   2. Calls into page/author script from a worker
-//   3. Calls into internal script (typically setup/teardown work)
-//
-// Debug-time checking of this is enforced via v8::MicrotasksScope.
-//
-// Calls of type (1) should generally go through ScriptController, as inspector
-// instrumentation is needed. ScriptController allocates V8RecursionScope for you.
-//
-// Calls of type (2) should always stack-allocate a v8::MicrotasksScope(kRunMicrtoasks)
-// in the same block as the call into script.
-//
-// Calls of type (3) should stack allocate a v8::MicrotasksScope(kDoNotRunMicrotasks) --
-// this skips work that is spec'd to happen at the end of the outer-most
-// script stack frame of calls into page script:
-// http://www.whatwg.org/specs/web-apps/current-work/#perform-a-microtask-checkpoint
-class CORE_EXPORT Microtask {
-    STATIC_ONLY(Microtask);
-public:
-    static void performCheckpoint(v8::Isolate*);
-
-    // TODO(jochen): Make all microtasks pass in the ScriptState they want to be
-    // executed in. Until then, all microtasks have to keep track of their
-    // ScriptState themselves.
-    static void enqueueMicrotask(PassOwnPtr<WebTaskRunner::Task>);
-    static void enqueueMicrotask(PassOwnPtr<SameThreadClosure>);
-};
-
-} // namespace blink
-
-#endif // Microtask_h