Remove all remaining traces of MessageLoopProxy.

content/browser/loader/resource_loader_unittest.cc

Index: content/browser/loader/resource_loader_unittest.cc
diff --git a/content/browser/loader/resource_loader_unittest.cc b/content/browser/loader/resource_loader_unittest.cc
index 04a551ff271a4263322d3fc0b4ec0cdf6e4b852b..e5a34194c53dc96627ecec8eb914cfd3da970b6c 100644
--- a/content/browser/loader/resource_loader_unittest.cc
+++ b/content/browser/loader/resource_loader_unittest.cc
@@ -938,10 +938,8 @@ class ResourceLoaderRedirectToFileTest : public ResourceLoaderTest {
                                          base::ThreadTaskRunnerHandle::Get()));
     file_stream_ = file_stream.get();
     deletable_file_ = ShareableFileReference::GetOrCreate(
-        temp_path_,
-        ShareableFileReference::DELETE_ON_FINAL_RELEASE,
-        BrowserThread::GetMessageLoopProxyForThread(
-            BrowserThread::FILE).get());
+        temp_path_, ShareableFileReference::DELETE_ON_FINAL_RELEASE,
+        BrowserThread::GetTaskRunnerForThread(BrowserThread::FILE).get());
 
     // Inject them into the handler.
     std::unique_ptr<RedirectToFileResourceHandler> handler(