Battery Status API: blink promise implementation and layout tests.

Source/modules/battery/BatteryManager.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 BatteryManager_h
 #define BatteryManager_h
 
+#include "bindings/v8/ScriptPromise.h"
+#include "bindings/v8/ScriptPromiseResolverWithContext.h"
 #include "core/dom/ContextLifecycleObserver.h"
 #include "core/dom/Document.h"
 #include "core/frame/DeviceEventControllerBase.h"
 #include "modules/EventTargetModules.h"
 #include "platform/heap/Handle.h"
 
 namespace WebCore {
 
 class BatteryStatus;
-class Navigator;
 
 class BatteryManager FINAL : public RefCountedWillBeRefCountedGarbageCollected<BatteryManager>, public ActiveDOMObject, public DeviceEventControllerBase, public EventTargetWithInlineData {
     REFCOUNTED_EVENT_TARGET(BatteryManager);
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(BatteryManager);
 public:
     virtual ~BatteryManager();
     static PassRefPtrWillBeRawPtr<BatteryManager> create(ExecutionContext*);
 
+    // Returns a promise object that will be resolved with this BatteryManager.
+    ScriptPromise startRequest(ScriptState*);
+
     // EventTarget implementation.
     virtual const WTF::AtomicString& interfaceName() const OVERRIDE { return EventTargetNames::BatteryManager; }
     virtual ExecutionContext* executionContext() const OVERRIDE { return ContextLifecycleObserver::executionContext(); }
 
     bool charging();
     double chargingTime();
     double dischargingTime();
     double level();
 
     DEFINE_ATTRIBUTE_EVENT_LISTENER(chargingchange);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(chargingtimechange);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(dischargingtimechange);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(levelchange);
 
     // Inherited from DeviceEventControllerBase.
     virtual void didUpdateData() OVERRIDE;
     virtual void registerWithDispatcher() OVERRIDE;
     virtual void unregisterWithDispatcher() OVERRIDE;
     virtual bool hasLastData() OVERRIDE;
 
     // ActiveDOMObject implementation.
     virtual bool canSuspend() const { return true; }
     virtual void suspend() OVERRIDE;
     virtual void resume() OVERRIDE;
     virtual void stop() OVERRIDE;
 
 private:
+    class ThenFunction;
+
+    enum State {
+        NotStarted,
+        Pending,
+        Resolved,
+    };
+
     explicit BatteryManager(ExecutionContext*);
+    void onPromiseResolved();

[abarth-chromium, 2014/06/11 19:44:34]

didResolvePromise?

[timvolodine, 2014/06/12 16:38:45]

Done.

 
+    RefPtr<ScriptPromiseResolverWithContext> m_resolver;
     RefPtr<BatteryStatus> m_batteryStatus;
+    State m_state;
 };
 
 }
 
 #endif // BatteryManager_h