Upstream oodles of Chrome for Android code into Chromium.

chrome/browser/android/history_report/history_report_jni_bridge.h

+// Copyright 2015 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_ANDROID_HISTORY_REPORT_HISTORY_REPORT_JNI_BRIDGE_H_
+#define CHROME_BROWSER_ANDROID_HISTORY_REPORT_HISTORY_REPORT_JNI_BRIDGE_H_
+
+#include <jni.h>
+#include <string>
+
+#include "base/android/jni_weak_ref.h"
+#include "base/android/scoped_java_ref.h"
+#include "base/memory/scoped_ptr.h"
+
+namespace bookmarks {
+class BookmarkModel;
+}
+
+namespace history_report {
+
+class DataObserver;
+class DataProvider;
+class DeltaFileService;
+class UsageReportsBufferService;
+
+bool RegisterHistoryReportJniBridge(JNIEnv* env);
+
+// JNI Bridge which connects native and java parts of Icing integration.
+class HistoryReportJniBridge {
+ public:
+  HistoryReportJniBridge(JNIEnv* env, jobject obj);
+  ~HistoryReportJniBridge();
+
+  // Removes entries with seqno <= seq_no_lower_bound from delta file.
+  // Returns biggest seqno in delta file.
+  jlong TrimDeltaFile(JNIEnv* env, jobject obj, jlong seq_no_lower_bound);
+  // Queries delta file for up to limit entries with seqno > last_seq_no.
+  base::android::ScopedJavaLocalRef<jobjectArray> Query(JNIEnv* env,
+                                                        jobject obj,
+                                                        jlong last_seq_no,
+                                                        jint limit);
+  // Queries usage reports buffer for a batch of reports to be reported to
+  // Icing.
+  base::android::ScopedJavaLocalRef<jobjectArray> GetUsageReportsBatch(
+      JNIEnv* env,
+      jobject obj,
+      jint batch_size);
+  // Removes a batch of usage reports from a usage reports buffer.
+  void RemoveUsageReports(JNIEnv* env,
+                          jobject obj,
+                          jobjectArray& batch);
+  // Populates the usage reports buffer with historic visits.
+  // This should happen only once per corpus registration.
+  jboolean AddHistoricVisitsToUsageReportsBuffer(JNIEnv* env, jobject obj);
+  // Dumps internal state.
+  base::android::ScopedJavaLocalRef<jstring> Dump(JNIEnv* env, jobject obj);
+
+  void NotifyDataChanged();
+  void NotifyDataCleared();
+  void StopReporting();
+  void StartReporting();
+
+ private:
+  JavaObjectWeakGlobalRef weak_java_provider_;
+  scoped_ptr<DataObserver> data_observer_;
+  scoped_ptr<DataProvider> data_provider_;
+  scoped_ptr<DeltaFileService> delta_file_service_;
+  scoped_ptr<bookmarks::BookmarkModel> bookmark_model_;
+  scoped_ptr<UsageReportsBufferService> usage_reports_buffer_service_;
+
+  DISALLOW_COPY_AND_ASSIGN(HistoryReportJniBridge);
+};
+
+}  // namespace history_report
+
+#endif  // CHROME_BROWSER_ANDROID_HISTORY_REPORT_HISTORY_REPORT_JNI_BRIDGE_H_