Initial implementation of API WakeLock.

Source/modules/wake_lock/WakeLockController.h

+// 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.
+
+#ifndef WakeLockController_h
+#define WakeLockController_h
+
+#include "bindings/core/v8/ScriptPromise.h"
+#include "core/page/Page.h"
+#include "core/page/PageLifecycleObserver.h"
+#include "public/platform/WebWakeLockRequestCallback.h"
+#include "public/platform/WebWakeLockType.h"
+#include "wtf/OwnPtr.h"
+#include "wtf/Vector.h"
+
+namespace blink {
+
+class ScriptState;
+class WakeLockPromiseResolver;
+class WebWakeLockClient;
+typedef WTF::OwnPtr<WakeLockPromiseResolver> WakeLockPromiseResolverOwnPtr;
+
+class WakeLockController FINAL
+    : public NoBaseWillBeGarbageCollectedFinalized<WakeLockController>
+    , public WillBeHeapSupplement<Page>
+    , public PageLifecycleObserver
+    , public WebWakeLockRequestCallback {
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(WakeLockController);
+    WTF_MAKE_NONCOPYABLE(WakeLockController);
+
+public:
+    virtual ~WakeLockController();
+
+    static PassOwnPtrWillBeRawPtr<WakeLockController> create(Page&, WebWakeLockClient*);
+
+    ScriptPromise requestWakeLock(ScriptState*, WebWakeLockType);
+    ScriptPromise requestWakeUnlock(ScriptState*, WebWakeLockType);
+    bool isHeld(WebWakeLockType);
+
+    virtual void onCreatedWakeLockSuccessful(int);

[mlamouri (slow - plz ping), 2014/08/18 12:15:53]

nit: specify the interface you are implementing, like:
// Implements WebWakeLockRequestCallback.

[redchenko, 2014/08/19 16:42:20]

Done.

+    virtual void onCreatedWakeLockFailed(int);
+    virtual void onUnlockedWakeLockSuccessful(int);
+    virtual void onUnlockedWakeLockFailed(int);
+
+    WebWakeLockClient* client() { return m_client; }
+    void resetClient();
+
+    static const char* supplementName();
+    static WakeLockController* from(Page*);
+    static void provideWakeLockTo(Page&, WebWakeLockClient*);
+    // Inherited from PageLifecycleObserver.
+    virtual void trace(Visitor*) OVERRIDE;
+    virtual void willBeDestroyed() OVERRIDE;
+
+private:
+    WakeLockController(Page&, WebWakeLockClient*);
+    ScriptPromise requestLockOrUnlock(ScriptState*, WebWakeLockType, bool);
+    WebWakeLockType resolveOrRejectById(int id, bool successful);
+
+    WebWakeLockClient* m_client;
+    Vector<WakeLockPromiseResolverOwnPtr> m_resolvers;
+    Vector<int> m_lockCounter;
+};
+
+} // namespace WebCore
+
+#endif // WakeLockController