Changes semantics of TabSelectedAt. For multi-selection the TabStrip

chrome/browser/tabs/tab_strip_model_observer.cc

 // Copyright (c) 2010 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 "chrome/browser/tabs/tab_strip_model_observer.h"
 
+#include "chrome/browser/tabs/tab_strip_model.h"
+
 void TabStripModelObserver::TabInsertedAt(TabContentsWrapper* contents,
                                           int index,
                                           bool foreground) {
 }
 
 void TabStripModelObserver::TabClosingAt(TabStripModel* tab_strip_model,
                                          TabContentsWrapper* contents,
                                          int index) {
 }
 
 void TabStripModelObserver::TabDetachedAt(TabContentsWrapper* contents,
                                           int index) {
 }
 
 void TabStripModelObserver::TabDeselected(TabContentsWrapper* contents) {
 }
 
+void TabStripModelObserver::TabSelectionChanged(
+    TabStripModel* model,
+    TabContentsWrapper* old_contents,
+    bool user_gesture) {
+  TabContentsWrapper* new_contents = model->GetSelectedTabContents();
+  if (new_contents != old_contents) {
+    TabSelectedAt(old_contents, new_contents, model->selected_index(),
+                  user_gesture);
+  }
+}
+
 void TabStripModelObserver::TabSelectedAt(TabContentsWrapper* old_contents,
                                           TabContentsWrapper* new_contents,
                                           int index,
                                           bool user_gesture) {
 }
 
 void TabStripModelObserver::TabMoved(TabContentsWrapper* contents,
                                      int from_index,
                                      int to_index) {
 }
@@ skipping 17 matching lines @@
                                                 int index) {
 }
 
 void TabStripModelObserver::TabBlockedStateChanged(TabContentsWrapper* contents,
                                                    int index) {
 }
 
 void TabStripModelObserver::TabStripEmpty() {}
 
 void TabStripModelObserver::TabStripModelDeleted() {}