Prepare ClearBrowsingDataDialogFragment for browsing data counters.

chrome/browser/android/browsing_data/browsing_data_counter_bridge.cc

+// 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.
+
+#include "chrome/browser/android/browsing_data/browsing_data_counter_bridge.h"
+
+#include "base/android/jni_string.h"
+#include "chrome/browser/browsing_data/browsing_data_counter_utils.h"
+#include "chrome/browser/profiles/profile_manager.h"
+#include "chrome/common/pref_names.h"
+#include "jni/BrowsingDataCounterBridge_jni.h"
+
+BrowsingDataCounterBridge::BrowsingDataCounterBridge(
+    JNIEnv* env, const JavaParamRef<jobject>& obj, jint data_type)
+    : jobject_(obj) {
+  DCHECK_GE(data_type, 0);
+  DCHECK_LT(data_type, BrowsingDataType::NUM_TYPES);
+
+  std::string pref;
+  if (!GetDeletionPreferenceFromDataType(
+      static_cast<BrowsingDataType>(data_type), &pref)) {
+    return;
+  }
+
+  counter_.reset(CreateCounterForPreference(pref));
+
+  if (!counter_)
+    return;
+
+  counter_->Init(
+      ProfileManager::GetActiveUserProfile()->GetOriginalProfile(),
+      base::Bind(&BrowsingDataCounterBridge::onCounterFinished,
+                 base::Unretained(this)));
+  counter_->Restart();
+}
+
+BrowsingDataCounterBridge::~BrowsingDataCounterBridge() {
+}
+
+void BrowsingDataCounterBridge::Destroy(JNIEnv* env,
+                                        const JavaParamRef<jobject>& obj) {
+  delete this;
+}
+
+// static
+bool BrowsingDataCounterBridge::Register(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+void BrowsingDataCounterBridge::onCounterFinished(
+    scoped_ptr<BrowsingDataCounter::Result> result) {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  ScopedJavaLocalRef<jstring> result_string =
+      base::android::ConvertUTF16ToJavaString(
+          env, GetCounterTextFromResult(result.get()));
+  Java_BrowsingDataCounterBridge_onBrowsingDataCounterFinished(
+      env, jobject_.obj(), result_string.obj());
+}
+
+static jlong Init(
+    JNIEnv* env, const JavaParamRef<jobject>& obj, int data_type) {
+  return reinterpret_cast<intptr_t>(
+      new BrowsingDataCounterBridge(env, obj, data_type));
+}