Added some public methods to web::NavigationController.

ios/web/navigation/navigation_manager_impl.mm

 // 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.
 
 #include "ios/web/navigation/navigation_manager_impl.h"
 
 #include "base/logging.h"
 #import "ios/web/navigation/crw_session_controller+private_constructors.h"
 #import "ios/web/navigation/crw_session_controller.h"
 #import "ios/web/navigation/crw_session_entry.h"
@@ skipping 125 matching lines @@
 
 NavigationItem* NavigationManagerImpl::GetTransientItem() const {
   return [[session_controller_ transientEntry] navigationItem];
 }
 
 NavigationItem* NavigationManagerImpl::GetLastCommittedItem() const {
   CRWSessionEntry* entry = [session_controller_ lastCommittedEntry];
   return [entry navigationItem];
 }
 
-NavigationItem* NavigationManagerImpl::GetItemAtIndex(size_t index) const {
-  NSArray* entries =  [session_controller_ entries];
-  return index < entries.count ? [entries[index] navigationItem] : nullptr;
-}
-
-int NavigationManagerImpl::GetCurrentEntryIndex() const {
-  return [session_controller_ currentNavigationIndex];
-}
-
 int NavigationManagerImpl::GetLastCommittedEntryIndex() const {
   if (![[session_controller_ entries] count])
     return -1;
   return [session_controller_ currentNavigationIndex];
 }
 
-int NavigationManagerImpl::GetEntryCount() const {
-  return [[session_controller_ entries] count];
-}
-
 bool NavigationManagerImpl::RemoveEntryAtIndex(int index) {
   if (index == GetLastCommittedEntryIndex() ||
       index == GetPendingEntryIndex())
     return false;
 
   NSUInteger idx = static_cast<NSUInteger>(index);
   NSArray* entries = [session_controller_ entries];
   if (idx >= entries.count)
     return false;
 
@@ skipping 20 matching lines @@
 void NavigationManagerImpl::AddTransientURLRewriter(
     BrowserURLRewriter::URLRewriter rewriter) {
   DCHECK(rewriter);
   if (!transient_url_rewriters_) {
     transient_url_rewriters_.reset(
         new std::vector<BrowserURLRewriter::URLRewriter>());
   }
   transient_url_rewriters_->push_back(rewriter);
 }
 
+int NavigationManagerImpl::GetEntryCount() const {
+  return [[session_controller_ entries] count];
+}
+
+NavigationItem* NavigationManagerImpl::GetItemAtIndex(size_t index) const {
+  NSArray* entries = [session_controller_ entries];
+  return index < entries.count ? [entries[index] navigationItem] : nullptr;
+}
+
+int NavigationManagerImpl::GetCurrentEntryIndex() const {
+  return [session_controller_ currentNavigationIndex];
+}
+
 scoped_ptr<std::vector<BrowserURLRewriter::URLRewriter>>
 NavigationManagerImpl::GetTransientURLRewriters() {
   return transient_url_rewriters_.Pass();
 }
 
 void NavigationManagerImpl::RemoveTransientURLRewriters() {
   transient_url_rewriters_.reset();
 }
 
 void NavigationManagerImpl::LoadURL(const GURL& url,
@@ skipping 46 matching lines @@
 }
 
 void NavigationManagerImpl::CopyState(
     NavigationManagerImpl* navigation_manager) {
   SetSessionController(
       [[navigation_manager->GetSessionController() copy] autorelease]);
 }
 
 }  // namespace web