Java code for fetching variations first run seed after receiving chrome.TOS_ACKED broadcast.

components/variations/android/variations_seed_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 "components/variations/android/variations_seed_bridge.h"
+
+#include <jni.h>
+#include <vector>
+
+#include "base/android/jni_android.h"
+#include "base/android/jni_array.h"
+#include "base/android/jni_string.h"
+#include "base/android/jni_weak_ref.h"
+#include "jni/VariationsSeedBridge_jni.h"
+
+using base::android::AttachCurrentThread;
+using base::android::ConvertJavaStringToUTF8;
+using base::android::GetApplicationContext;
+using base::android::ScopedJavaLocalRef;
+
+namespace {
+
+std::string JavaByteArrayToString(JNIEnv* env, jbyteArray byte_array) {
+  if (!byte_array)
+    return std::string();
+  std::vector<uint8> array_data;
+  base::android::JavaByteArrayToByteVector(env, byte_array, &array_data);
+  return std::string(array_data.begin(), array_data.end());
+}
+
+}  // namespace
+
+namespace variations {
+namespace android {
+
+bool RegisterVariationsSeedBridge(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+void GetVariationsFirstRunSeed(std::string* seed_data,
+                               std::string* seed_signature,
+                               std::string* seed_country) {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jbyteArray> j_seed_data =
+      Java_VariationsSeedBridge_getVariationsFirstRunSeedData(
+          env, GetApplicationContext());
+  ScopedJavaLocalRef<jstring> j_seed_signature =
+      Java_VariationsSeedBridge_getVariationsFirstRunSeedSignature(
+          env, GetApplicationContext());
+  ScopedJavaLocalRef<jstring> j_seed_country =
+      Java_VariationsSeedBridge_getVariationsFirstRunSeedCountry(
+          env, GetApplicationContext());
+  *seed_data = JavaByteArrayToString(env, j_seed_data.obj());
+  *seed_signature = ConvertJavaStringToUTF8(j_seed_signature);
+  *seed_country = ConvertJavaStringToUTF8(j_seed_country);
+}
+
+}  // namespace android
+}  // namespace variations