[Offline Prefetch] Pass api key to offline prefetch requests

components/offline_pages/core/prefetch/prefetch_request_fetcher_unittest.cc

Index: components/offline_pages/core/prefetch/prefetch_request_fetcher_unittest.cc
diff --git a/components/offline_pages/core/prefetch/prefetch_request_fetcher_unittest.cc b/components/offline_pages/core/prefetch/prefetch_request_fetcher_unittest.cc
index 3dbed4f122106807fa2163b360395f8495c38406..8464c3cbcfcdafdd02a672eab98a303f01238f41 100644
--- a/components/offline_pages/core/prefetch/prefetch_request_fetcher_unittest.cc
+++ b/components/offline_pages/core/prefetch/prefetch_request_fetcher_unittest.cc
@@ -20,6 +20,7 @@ using testing::SaveArg;
 namespace offline_pages {
 
 namespace {
+const version_info::Channel kTestChannel = version_info::Channel::UNKNOWN;
 const char kTestURLPath[] = "/test";
 const char kTestMessage[] = "Testing";
 }  // namespace
@@ -73,7 +74,8 @@ PrefetchRequestStatus PrefetchRequestFetcherTest::RunFetcher(
   base::MockCallback<PrefetchRequestFetcher::FinishedCallback> callback;
   std::unique_ptr<PrefetchRequestFetcher> fetcher =
       PrefetchRequestFetcher::CreateForPost(kTestURLPath, kTestMessage,
-                                            request_context(), callback.Get());
+                                            kTestChannel, request_context(),
+                                            callback.Get());
 
   PrefetchRequestStatus status;
   std::string data;