google_apis: Migrate callers of message_loop_proxy() to task_runner()

google_apis/drive/base_requests_unittest.cc

Index: google_apis/drive/base_requests_unittest.cc
diff --git a/google_apis/drive/base_requests_unittest.cc b/google_apis/drive/base_requests_unittest.cc
index 95e35e502c251fed42dfb9a9d50834a01a4060b9..fc9cdca9f16969adef12e4d741dde6bcfd5560c5 100644
--- a/google_apis/drive/base_requests_unittest.cc
+++ b/google_apis/drive/base_requests_unittest.cc
@@ -108,11 +108,11 @@ class BaseRequestsTest : public testing::Test {
 
   void SetUp() override {
     request_context_getter_ = new net::TestURLRequestContextGetter(
-        message_loop_.message_loop_proxy());
+        message_loop_.task_runner());
 
     sender_.reset(new RequestSender(new DummyAuthService,
                                     request_context_getter_.get(),
-                                    message_loop_.message_loop_proxy(),
+                                    message_loop_.task_runner(),
                                     std::string() /* custom user agent */));
 
     ASSERT_TRUE(test_server_.InitializeAndWaitUntilReady());