[ios] Extracted web_test.h classes into separate files.

ios/web/test/web_test_with_web_controller.mm

Index: ios/web/test/web_test_with_web_controller.mm
diff --git a/ios/web/test/web_test_with_web_controller.mm b/ios/web/test/web_test_with_web_controller.mm
new file mode 100644
index 0000000000000000000000000000000000000000..2e14d9dac1ddd7bf12320eea9e63a44c277d84c5
--- /dev/null
+++ b/ios/web/test/web_test_with_web_controller.mm
@@ -0,0 +1,19 @@
+// Copyright 2016 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/web/test/web_test_with_web_controller.h"
+
+#import "ios/web/web_state/web_state_impl.h"
+
+namespace web {
+
+WebTestWithWebController::WebTestWithWebController() {}
+
+WebTestWithWebController::~WebTestWithWebController() {}
+
+CRWWebController* WebTestWithWebController::web_controller() {
+  return static_cast<web::WebStateImpl*>(web_state())->GetWebController();
+}
+
+}  // namespace web