Split //blimp/client/core to relevant parts.

blimp/client/core/contents/blimp_navigation_controller_impl.cc

 // 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.
 
-#include "blimp/client/core/blimp_navigation_controller_impl.h"
+#include "blimp/client/core/contents/blimp_navigation_controller_impl.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/memory/ref_counted.h"
 #include "base/threading/thread_task_runner_handle.h"
-#include "blimp/client/core/blimp_navigation_controller_delegate.h"
+#include "blimp/client/core/contents/blimp_navigation_controller_delegate.h"
 
 namespace blimp {
 namespace client {
 
 BlimpNavigationControllerImpl::BlimpNavigationControllerImpl(
     BlimpNavigationControllerDelegate* delegate)
     : delegate_(delegate), weak_ptr_factory_(this) {}
 
 BlimpNavigationControllerImpl::~BlimpNavigationControllerImpl() = default;
 
@@ skipping 12 matching lines @@
 const GURL& BlimpNavigationControllerImpl::GetURL() {
   return current_url_;
 }
 
 void BlimpNavigationControllerImpl::NotifyDelegateURLLoaded(const GURL& url) {
   delegate_->NotifyURLLoaded(url);
 }
 
 }  // namespace client
 }  // namespace blimp