chrome: Put browser_navigator.h into chrome namespace.

chrome/browser/ui/cocoa/tabs/tab_strip_controller.mm

 // Copyright (c) 2012 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 "chrome/browser/ui/cocoa/tabs/tab_strip_controller.h"
 
 #import <QuartzCore/QuartzCore.h>
 
 #include <cmath>
 #include <limits>
@@ skipping 1896 matching lines @@
   NSInteger index;
   WindowOpenDisposition disposition;
   [self droppingURLsAt:point
             givesIndex:&index
            disposition:&disposition];
 
   // Either insert a new tab or open in a current tab.
   switch (disposition) {
     case NEW_FOREGROUND_TAB: {
       content::RecordAction(UserMetricsAction("Tab_DropURLBetweenTabs"));
-      browser::NavigateParams params(
-          browser_, *url, content::PAGE_TRANSITION_TYPED);
+      chrome::NavigateParams params(browser_, *url,
+                                    content::PAGE_TRANSITION_TYPED);
       params.disposition = disposition;
       params.tabstrip_index = index;
       params.tabstrip_add_types =
           TabStripModel::ADD_ACTIVE | TabStripModel::ADD_FORCE_INDEX;
-      browser::Navigate(&params);
+      chrome::Navigate(&params);
       break;
     }
     case CURRENT_TAB: {
       content::RecordAction(UserMetricsAction("Tab_DropURLOnTab"));
       OpenURLParams params(
           *url, Referrer(), CURRENT_TAB, content::PAGE_TRANSITION_TYPED, false);
       tabStripModel_->GetTabContentsAt(index)->web_contents()->OpenURL(params);
       tabStripModel_->ActivateTabAt(index, true);
       break;
     }
@@ skipping 189 matching lines @@
   NSInteger index = [self indexFromModelIndex:modelIndex];
   BrowserWindowController* controller =
       (BrowserWindowController*)[[switchView_ window] windowController];
   DCHECK(index >= 0);
   if (index >= 0) {
     [controller setTab:[self viewAtIndex:index] isDraggable:YES];
   }
 }
 
 @end