[iOS] Upstream //ios/net

ios/net/clients/crn_forwarding_network_client.mm

Index: ios/net/clients/crn_forwarding_network_client.mm
diff --git a/ios/net/clients/crn_forwarding_network_client.mm b/ios/net/clients/crn_forwarding_network_client.mm
new file mode 100644
index 0000000000000000000000000000000000000000..8d8f114114b14bed6cba19912462c03af27ec07f
--- /dev/null
+++ b/ios/net/clients/crn_forwarding_network_client.mm
@@ -0,0 +1,87 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "ios/net/clients/crn_forwarding_network_client.h"
+
+#include "base/logging.h"
+#include "base/mac/scoped_nsobject.h"
+#include "base/threading/thread_checker.h"
+
+@implementation CRNForwardingNetworkClient {
+  // Next client in the client chain.
+  base::scoped_nsprotocol<id<CRNNetworkClientProtocol>> _underlyingClient;
+  base::ThreadChecker _threadChecker;
+}
+
+#pragma mark CRNNetworkClientProtocol methods
+
+- (void)didFailWithNSErrorCode:(NSInteger)nsErrorCode
+                  netErrorCode:(int)netErrorCode {
+  DCHECK(_threadChecker.CalledOnValidThread());
+  DCHECK(_underlyingClient);
+  [_underlyingClient didFailWithNSErrorCode:nsErrorCode
+                               netErrorCode:netErrorCode];
+}
+
+- (void)didLoadData:(NSData*)data {
+  DCHECK(_threadChecker.CalledOnValidThread());
+  DCHECK(_underlyingClient);
+  [_underlyingClient didLoadData:data];
+}
+
+- (void)didReceiveResponse:(NSURLResponse*)response {
+  DCHECK(_threadChecker.CalledOnValidThread());
+  DCHECK(_underlyingClient);
+  [_underlyingClient didReceiveResponse:response];
+}
+
+- (void)wasRedirectedToRequest:(NSURLRequest*)request
+                 nativeRequest:(net::URLRequest*)nativeRequest
+              redirectResponse:(NSURLResponse*)response {
+  DCHECK(_threadChecker.CalledOnValidThread());
+  DCHECK(_underlyingClient);
+  [_underlyingClient wasRedirectedToRequest:request
+                              nativeRequest:nativeRequest
+                           redirectResponse:response];
+}
+
+- (void)didFinishLoading {
+  DCHECK(_threadChecker.CalledOnValidThread());
+  DCHECK(_underlyingClient);
+  [_underlyingClient didFinishLoading];
+}
+
+- (void)didCreateNativeRequest:(net::URLRequest*)nativeRequest {
+  DCHECK(_threadChecker.CalledOnValidThread());
+  DCHECK(_underlyingClient);
+  [_underlyingClient didCreateNativeRequest:nativeRequest];
+}
+
+- (void)didRecieveAuthChallenge:(net::AuthChallengeInfo*)authInfo
+                  nativeRequest:(const net::URLRequest&)nativeRequest
+                       callback:(const network_client::AuthCallback&)callback {
+  DCHECK(_threadChecker.CalledOnValidThread());
+  DCHECK(_underlyingClient);
+  [_underlyingClient didRecieveAuthChallenge:authInfo
+                               nativeRequest:nativeRequest
+                                    callback:callback];
+}
+
+- (void)cancelAuthRequest {
+  DCHECK(_threadChecker.CalledOnValidThread());
+  DCHECK(_underlyingClient);
+  [_underlyingClient cancelAuthRequest];
+}
+
+- (id<CRNNetworkClientProtocol>)underlyingClient {
+  return _underlyingClient;
+}
+
+- (void)setUnderlyingClient:(id<CRNNetworkClientProtocol>)underlyingClient {
+  DCHECK(_threadChecker.CalledOnValidThread());
+  DCHECK(underlyingClient);
+  _underlyingClient.reset([underlyingClient retain]);
+}
+
+@end