[Offline Pages] Fix test harness not using default policy.

Fixed the issue where the test harness was not using the values in default
policy, which would not be easy to track and lead to unexpected results.

BUG=665990

Review-Url: https://codereview.chromium.org/2506103002
Cr-Commit-Position: refs/heads/master@{#433312}

chrome/browser/android/offline_pages/evaluation/offline_page_evaluation_bridge.cc

@@ -47,12 +47,6 @@ namespace offline_pages {
 namespace android {
 
 namespace {
-const bool kPreferUntriedRequest = false;
-const bool kPreferEarlierRequest = true;
-const bool kPreferRetryCountOverRecency = false;
-const int kMaxStartedTries = 4;
-const int kMaxCompletedTries = 1;
-const int kImmediateRequestExpirationTimeInSeconds = 3600;
 
 void ToJavaOfflinePageList(JNIEnv* env,
                            jobject j_result_obj,
@@ -170,12 +164,7 @@ bool OfflinePageEvaluationBridge::Register(JNIEnv* env) {
 std::unique_ptr<KeyedService>
 OfflinePageEvaluationBridge::GetTestingRequestCoordinator(
     content::BrowserContext* context) {
-  // Create a new OfflinerPolicy with a larger background processing
-  // budget (3600 sec). Other values are the same with default ones.
-  std::unique_ptr<OfflinerPolicy> policy(new OfflinerPolicy(
-      kPreferUntriedRequest, kPreferEarlierRequest,
-      kPreferRetryCountOverRecency, kMaxStartedTries, kMaxCompletedTries,
-      kImmediateRequestExpirationTimeInSeconds));
+  std::unique_ptr<OfflinerPolicy> policy(new OfflinerPolicy());
   std::unique_ptr<OfflinerFactory> prerenderer_offliner(
       new PrerenderingOfflinerFactory(context));