Introduce a layering in the invalidation component as public and impl

components/invalidation/invalidation_service_android.h

-// Copyright (c) 2013 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 COMPONENTS_INVALIDATION_INVALIDATION_SERVICE_ANDROID_H_
-#define COMPONENTS_INVALIDATION_INVALIDATION_SERVICE_ANDROID_H_
-
-#include <jni.h>
-#include <map>
-
-#include "base/android/jni_android.h"
-#include "base/android/scoped_java_ref.h"
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/threading/non_thread_safe.h"
-#include "components/invalidation/invalidation_logger.h"
-#include "components/invalidation/invalidation_service.h"
-#include "components/invalidation/invalidator_registrar.h"
-#include "components/keyed_service/core/keyed_service.h"
-
-namespace invalidation {
-
-class InvalidationLogger;
-
-// This InvalidationService is used to deliver invalidations on Android.  The
-// Android operating system has its own mechanisms for delivering invalidations.
-class InvalidationServiceAndroid
-    : public base::NonThreadSafe,
-      public InvalidationService {
- public:
-  explicit InvalidationServiceAndroid(jobject context);
-  ~InvalidationServiceAndroid() override;
-
-  // InvalidationService implementation.
-  //
-  // Note that this implementation does not properly support Ack-tracking,
-  // fetching the invalidator state, or querying the client's ID.  Support for
-  // exposing the client ID should be available soon; see crbug.com/172391.
-  void RegisterInvalidationHandler(
-      syncer::InvalidationHandler* handler) override;
-  bool UpdateRegisteredInvalidationIds(syncer::InvalidationHandler* handler,
-                                       const syncer::ObjectIdSet& ids) override;
-  void UnregisterInvalidationHandler(
-      syncer::InvalidationHandler* handler) override;
-  syncer::InvalidatorState GetInvalidatorState() const override;
-  std::string GetInvalidatorClientId() const override;
-  InvalidationLogger* GetInvalidationLogger() override;
-  void RequestDetailedStatus(
-      base::Callback<void(const base::DictionaryValue&)> caller) const override;
-  IdentityProvider* GetIdentityProvider() override;
-
-  void Invalidate(JNIEnv* env,
-                  jobject obj,
-                  jint object_source,
-                  jstring object_id,
-                  jlong version,
-                  jstring state);
-
-  // The InvalidationServiceAndroid always reports that it is enabled.
-  // This is used only by unit tests.
-  void TriggerStateChangeForTest(syncer::InvalidatorState state);
-
-  static bool RegisterJni(JNIEnv* env);
-
- private:
-  typedef std::map<invalidation::ObjectId,
-                   int64,
-                   syncer::ObjectIdLessThan> ObjectIdVersionMap;
-
-  // Friend class so that InvalidationServiceFactoryAndroid has access to
-  // private member object java_ref_.
-  friend class InvalidationServiceFactoryAndroid;
-
-  // Points to a Java instance of InvalidationService.
-  base::android::ScopedJavaGlobalRef<jobject> java_ref_;
-
-  syncer::InvalidatorRegistrar invalidator_registrar_;
-  syncer::InvalidatorState invalidator_state_;
-
-  // The invalidation API spec allows for the possibility of redundant
-  // invalidations, so keep track of the max versions and drop
-  // invalidations with old versions.
-  ObjectIdVersionMap max_invalidation_versions_;
-
-  // The invalidation logger object we use to record state changes
-  // and invalidations.
-  InvalidationLogger logger_;
-
-  DISALLOW_COPY_AND_ASSIGN(InvalidationServiceAndroid);
-};
-
-}  // namespace invalidation
-
-#endif  // COMPONENTS_INVALIDATION_INVALIDATION_SERVICE_ANDROID_H_