[Offline Pages] Expanding event logger to be used by harness.

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

Index: chrome/browser/android/offline_pages/evaluation/offline_page_evaluation_bridge.cc
diff --git a/chrome/browser/android/offline_pages/evaluation/offline_page_evaluation_bridge.cc b/chrome/browser/android/offline_pages/evaluation/offline_page_evaluation_bridge.cc
index 1d138ad90a24d5c4101be3e94e50a174f957f34d..7a3ed4a871cf1430b634e765da0ac7011de6b09d 100644
--- a/chrome/browser/android/offline_pages/evaluation/offline_page_evaluation_bridge.cc
+++ b/chrome/browser/android/offline_pages/evaluation/offline_page_evaluation_bridge.cc
@@ -53,6 +53,7 @@ const bool kPreferRetryCountOverRecency = false;
 const int kMaxStartedTries = 4;
 const int kMaxCompletedTries = 1;
 const int kImmediateRequestExpirationTimeInSeconds = 3600;
+const char kNativeTag[] = "OPNative";
 
 void ToJavaOfflinePageList(JNIEnv* env,
                            jobject j_result_obj,
@@ -225,6 +226,8 @@ OfflinePageEvaluationBridge::OfflinePageEvaluationBridge(
   NotifyIfDoneLoading();
   offline_page_model_->AddObserver(this);
   request_coordinator_->AddObserver(this);
+  offline_page_model->GetLogger()->SetClient(this);
+  request_coordinator->GetLogger()->SetClient(this);
 }
 
 OfflinePageEvaluationBridge::~OfflinePageEvaluationBridge() {
@@ -269,6 +272,13 @@ void OfflinePageEvaluationBridge::OnChanged(const SavePageRequest& request) {
       env, java_ref_, ToJavaSavePageRequest(env, request));
 }
 
+void OfflinePageEvaluationBridge::CustomLog(const std::string& message) {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  Java_OfflinePageEvaluationBridge_log(env, java_ref_,
+                                       ConvertUTF8ToJavaString(env, kNativeTag),
+                                       ConvertUTF8ToJavaString(env, message));
+}
+
 void OfflinePageEvaluationBridge::GetAllPages(
     JNIEnv* env,
     const JavaParamRef<jobject>& obj,