Implement Mojo SyncLoad

content/browser/loader/url_loader_factory_impl.cc

Index: content/browser/loader/url_loader_factory_impl.cc
diff --git a/content/browser/loader/url_loader_factory_impl.cc b/content/browser/loader/url_loader_factory_impl.cc
index 7b11666452e2683045457b408c5fb466e06c4243..75f308796010f677b82881070d1ecc4afcdd6948 100644
--- a/content/browser/loader/url_loader_factory_impl.cc
+++ b/content/browser/loader/url_loader_factory_impl.cc
@@ -13,6 +13,26 @@
 
 namespace content {
 
+namespace {
+
+void DispatchSyncLoadResult(
+    const URLLoaderFactoryImpl::SyncLoadCallback& callback,
+    const SyncLoadResult* result) {
+  // |result| can be null when a loading task is aborted unexpectedly. Reply
+  // with a failure result on that case.
+  // TODO(tzik): Test null-result case.
+  if (!result) {
+    SyncLoadResult failure;
+    failure.error_code = net::ERR_FAILED;
+    callback.Run(failure);
+    return;
+  }
+
+  callback.Run(*result);
+}
+
+} // namespace
+
 URLLoaderFactoryImpl::URLLoaderFactoryImpl(
     scoped_refptr<ResourceMessageFilter> resource_message_filter)
     : resource_message_filter_(std::move(resource_message_filter)) {
@@ -38,6 +58,18 @@ void URLLoaderFactoryImpl::CreateLoaderAndStart(
                                  resource_message_filter_.get());
 }
 
+void URLLoaderFactoryImpl::SyncLoad(int32_t routing_id,
+                                    int32_t request_id,
+                                    const ResourceRequest& url_request,
+                                    const SyncLoadCallback& callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+
+  ResourceDispatcherHostImpl* rdh = ResourceDispatcherHostImpl::Get();
+  rdh->OnSyncLoadWithMojo(routing_id, request_id, url_request,
+                          resource_message_filter_.get(),
+                          base::Bind(&DispatchSyncLoadResult, callback));
+}
+
 void URLLoaderFactoryImpl::Create(
     scoped_refptr<ResourceMessageFilter> filter,
     mojo::InterfaceRequest<mojom::URLLoaderFactory> request) {