Unit tests for importing prefs from the Java side implemented

components/variations/android/variations_seed_bridge.cc

Index: components/variations/android/variations_seed_bridge.cc
diff --git a/components/variations/android/variations_seed_bridge.cc b/components/variations/android/variations_seed_bridge.cc
index 16dfecaf0a55f0273567b6f779085e699fa3c912..8772ca9368026cae0e149dfd6ef35d3184b1fae3 100644
--- a/components/variations/android/variations_seed_bridge.cc
+++ b/components/variations/android/variations_seed_bridge.cc
@@ -15,6 +15,7 @@
 
 using base::android::AttachCurrentThread;
 using base::android::ConvertJavaStringToUTF8;
+using base::android::ConvertUTF8ToJavaString;
 using base::android::GetApplicationContext;
 using base::android::ScopedJavaLocalRef;
 
@@ -28,6 +29,13 @@ std::string JavaByteArrayToString(JNIEnv* env, jbyteArray byte_array) {
   return std::string(array_data.begin(), array_data.end());
 }
 
+ScopedJavaLocalRef<jbyteArray> StringToJavaByteArray(
+    JNIEnv* env,
+    const std::string& str_data) {
+  std::vector<uint8> array_data(str_data.begin(), str_data.end());
+  return base::android::ToJavaByteArray(env, array_data);
+}
+
 }  // namespace
 
 namespace variations {
@@ -76,5 +84,19 @@ void MarkVariationsSeedAsStored() {
                                                        GetApplicationContext());
 }
 
+void SetTestData(std::string seed_data,
+                 std::string seed_signature,
+                 std::string seed_country,
+                 std::string response_date,
+                 bool is_gzip_compressed) {
+  JNIEnv* env = AttachCurrentThread();
+  Java_VariationsSeedBridge_setVariationsFirstRunSeed(
+      env, GetApplicationContext(), StringToJavaByteArray(env, seed_data).obj(),
+      ConvertUTF8ToJavaString(env, seed_signature).obj(),
+      ConvertUTF8ToJavaString(env, seed_country).obj(),
+      ConvertUTF8ToJavaString(env, response_date).obj(),
+      static_cast<jboolean>(is_gzip_compressed));
+}
+
 }  // namespace android
 }  // namespace variations