Remove TabContents from AddBlankTabAt, kill AddBlankTab.

chrome/browser/ui/browser_navigator_browsertest.cc

Index: chrome/browser/ui/browser_navigator_browsertest.cc
diff --git a/chrome/browser/ui/browser_navigator_browsertest.cc b/chrome/browser/ui/browser_navigator_browsertest.cc
index 3b0510d668d33c53e3ed3d2a247db945752e33e4..8cd4af5f401c8c10a583655ead08ef8d08c26b05 100644
--- a/chrome/browser/ui/browser_navigator_browsertest.cc
+++ b/chrome/browser/ui/browser_navigator_browsertest.cc
@@ -82,7 +82,7 @@ chrome::NavigateParams BrowserNavigatorTest::MakeNavigateParams(
 Browser* BrowserNavigatorTest::CreateEmptyBrowserForType(Browser::Type type,
                                                          Profile* profile) {
   Browser* browser = new Browser(Browser::CreateParams(type, profile));
-  chrome::AddBlankTab(browser, true);
+  chrome::AddBlankTabAt(browser, -1, true);
   return browser;
 }
 
@@ -91,7 +91,7 @@ Browser* BrowserNavigatorTest::CreateEmptyBrowserForApp(Browser::Type type,
   Browser* browser = new Browser(
       Browser::CreateParams::CreateForApp(
           Browser::TYPE_POPUP, "Test", gfx::Rect(), profile));
-  chrome::AddBlankTab(browser, true);
+  chrome::AddBlankTabAt(browser, -1, true);
   return browser;
 }