Multi-tab: Adding new Notification when tab selection changes.

chrome/browser/ui/views/tabs/tab_strip.cc

Index: chrome/browser/ui/views/tabs/tab_strip.cc
diff --git a/chrome/browser/ui/views/tabs/tab_strip.cc b/chrome/browser/ui/views/tabs/tab_strip.cc
index e35af1d8c299ef3509a7bc869714664f6565720e..40d7fa48b81f976184848eef26a183e8c205feac 100644
--- a/chrome/browser/ui/views/tabs/tab_strip.cc
+++ b/chrome/browser/ui/views/tabs/tab_strip.cc
@@ -11,6 +11,7 @@
 #include "base/stl_util-inl.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/defaults.h"
+#include "chrome/browser/tabs/tab_strip_selection_model.h"
 #include "chrome/browser/themes/theme_service.h"
 #include "chrome/browser/ui/view_ids.h"
 #include "chrome/browser/ui/views/tabs/tab.h"
@@ -236,7 +237,8 @@ void TabStrip::RemoveTabAt(int model_index) {
     StartRemoveTabAnimation(model_index);
 }
 
-void TabStrip::SelectTabAt(int old_model_index, int new_model_index) {
+void TabStrip::SetSelection(const TabStripSelectionModel& old_selection,
+                            const TabStripSelectionModel& new_selection) {
   // We have "tiny tabs" if the tabs are so tiny that the unselected ones are
   // a different size to the selected ones.
   bool tiny_tabs = current_unselected_width_ != current_selected_width_;
@@ -246,8 +248,16 @@ void TabStrip::SelectTabAt(int old_model_index, int new_model_index) {
     SchedulePaint();
   }
 
-  if (old_model_index >= 0) {
-    GetTabAtTabDataIndex(ModelIndexToTabIndex(old_model_index))->
+  TabStripSelectionModel::SelectedIndices no_longer_selected;
+  std::insert_iterator<TabStripSelectionModel::SelectedIndices>
+      it(no_longer_selected, no_longer_selected.begin());
+  std::set_difference(old_selection.selected_indices().begin(),
+                      old_selection.selected_indices().end(),
+                      new_selection.selected_indices().begin(),
+                      new_selection.selected_indices().end(),
+                      it);
+  for (size_t i = 0; i < no_longer_selected.size(); ++i) {
+    GetTabAtTabDataIndex(ModelIndexToTabIndex(no_longer_selected[i]))->
         StopMiniTabTitleAnimation();
   }
 }