Remove tabstrip wrappers in browser_tabstrip.

chrome/browser/automation/testing_automation_provider.cc

Index: chrome/browser/automation/testing_automation_provider.cc
diff --git a/chrome/browser/automation/testing_automation_provider.cc b/chrome/browser/automation/testing_automation_provider.cc
index 5e3f044a82e3f711ef4c57afe6f8032cd8297e28..d532d72b86658dab9e34a0e778e911dda2073ef2 100644
--- a/chrome/browser/automation/testing_automation_provider.cc
+++ b/chrome/browser/automation/testing_automation_provider.cc
@@ -455,8 +455,8 @@ void TestingAutomationProvider::ActivateTab(int handle,
   *status = -1;
   if (browser_tracker_->ContainsHandle(handle) && at_index > -1) {
     Browser* browser = browser_tracker_->GetResource(handle);
-    if (at_index >= 0 && at_index < browser->tab_count()) {
-      chrome::ActivateTabAt(browser, at_index, true);
+    if (at_index >= 0 && at_index < browser->tab_strip_model()->count()) {
+      browser->tab_strip_model()->ActivateTabAt(at_index, true);
       *status = 0;
     }
   }