predictors: Make the resource_prefetch_predictor accessible from Java.

chrome/browser/predictors/resource_prefetch_predictor_android.h

+// Copyright 2016 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 CHROME_BROWSER_PREDICTORS_RESOURCE_PREFETCH_PREDICTOR_ANDROID_H_
+#define CHROME_BROWSER_PREDICTORS_RESOURCE_PREFETCH_PREDICTOR_ANDROID_H_
+
+#include <jni.h>
+
+#include "base/macros.h"
+
+class Profile;
+
+namespace base {
+namespace android {
+template <typename T>
+class JavaParamRef;
+}  // namespace android
+}  // namespace base
+
+namespace predictors {
+
+class ResourcePrefetchPredictor;
+
+class ResourcePrefetchPredictorAndroid {
+ public:
+  // See ResourcePrefetchPredictor::StartPrefetching().
+  void StartPrefetching(JNIEnv* env,
+                        const base::android::JavaParamRef<jobject>& jcaller,
+                        const base::android::JavaParamRef<jstring>& j_url);
+  // See ResourcePrefetchPredictor::StopPrefetching().
+  void StopPrefetching(JNIEnv* env,
+                       const base::android::JavaParamRef<jobject>& jcaller,
+                       const base::android::JavaParamRef<jstring>& j_url);
+
+  // Returns a pointer to a new instance of |ResourePrefetchPredictorAndroid|,
+  // for a given profile.
+  static jlong GetForProfile(JNIEnv* env, jclass clazz, jobject j_profile);
+  static bool Register(JNIEnv* env);
+
+ private:
+  explicit ResourcePrefetchPredictorAndroid(Profile* profile);
+
+  Profile* profile_;
+
+  DISALLOW_COPY_AND_ASSIGN(ResourcePrefetchPredictorAndroid);
+};
+
+}  // namespace predictors
+
+#endif  // CHROME_BROWSER_PREDICTORS_RESOURCE_PREFETCH_PREDICTOR_ANDROID_H_