Unit tests: fixes GCMDriver c'tor signature change.

Chromium change:

https://chromium.googlesource.com/chromium/src/+/a76a6e39300b764f4a0e3824b9d17e6c2bf51b73

commit a76a6e39300b764f4a0e3824b9d17e6c2bf51b73
Author: Alex Chau <alexchau@chromium.org>
Date:   Wed Jun 26 16:20:01 2019 +0000

    Create WebPushSender for sending web-push messages

    - Created WebPushSender for sending out web-push messages using VAPID
      (https://developers.google.com/web/ilt/pwa/introduction-to-push-notifications#using_vapid)
    - Created WebPushMessage struct to encapsulate message_id into messages
      to make callbacks easier
    - Refactored across GCMEncryptionProvider / GCMDriver to use
      WebPushMessage and provide callback mechanism

    Bug: 966037

components/invalidation/fcm_unittest.cc

@@ -20,6 +20,8 @@
 #include "components/gcm_driver/instance_id/instance_id_driver.h"
 #include "components/invalidation/impl/status.h"
 #include "google_apis/gcm/engine/account_mapping.h"
+#include "services/network/public/cpp/weak_wrapper_shared_url_loader_factory.h"
+#include "services/network/test/test_url_loader_factory.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 using base::TestMockTimeTaskRunner;
@@ -73,8 +75,11 @@ class MockInstanceID : public InstanceID {
 class MockGCMDriver : public gcm::GCMDriver {
  public:
   MockGCMDriver()
-      : GCMDriver(/*store_path=*/base::FilePath(),
-                  /*blocking_task_runner=*/nullptr) {}
+      : GCMDriver(
+            /*store_path=*/base::FilePath(),
+            /*blocking_task_runner=*/nullptr,
+            base::MakeRefCounted<network::WeakWrapperSharedURLLoaderFactory>(
+                &test_url_loader_factory_)) {}
   ~MockGCMDriver() override = default;
 
   MOCK_METHOD4(ValidateRegistration,
@@ -128,6 +133,7 @@ class MockGCMDriver : public gcm::GCMDriver {
                     gcm::GCMDecryptionResult result));
 
  private:
+  network::TestURLLoaderFactory test_url_loader_factory_;
   DISALLOW_COPY_AND_ASSIGN(MockGCMDriver);
 };
 

test/BUILD.gn

@@ -240,6 +240,8 @@ test("brave_unit_tests") {
     "//components/sync_preferences",
     "//components/translate/core/browser:test_support",
     "//content/public/common",
+    "//services/network/public/cpp:cpp",
+    "//services/network:test_support",
     "//third_party/cacheinvalidation",
   ]