Remove TabContents from AddBlankTabAt, kill AddBlankTab.

chrome/browser/ui/tabs/test_tab_strip_model_delegate.cc

Index: chrome/browser/ui/tabs/test_tab_strip_model_delegate.cc
diff --git a/chrome/browser/ui/tabs/test_tab_strip_model_delegate.cc b/chrome/browser/ui/tabs/test_tab_strip_model_delegate.cc
index 03e02b7be8b6ea66e1a32c471f09907fb16301d6..a0b4cec7b6b2f37a04b9ae9ed929735437070bdb 100644
--- a/chrome/browser/ui/tabs/test_tab_strip_model_delegate.cc
+++ b/chrome/browser/ui/tabs/test_tab_strip_model_delegate.cc
@@ -17,13 +17,7 @@ TestTabStripModelDelegate::TestTabStripModelDelegate() {
 TestTabStripModelDelegate::~TestTabStripModelDelegate() {
 }
 
-TabContents* TestTabStripModelDelegate::AddBlankTab(bool foreground) {
-  return NULL;
-}
-
-TabContents* TestTabStripModelDelegate::AddBlankTabAt(int index,
-                                                      bool foreground) {
-  return NULL;
+void TestTabStripModelDelegate::AddBlankTabAt(int index, bool foreground) {
 }
 
 Browser* TestTabStripModelDelegate::CreateNewStripWithContents(