3 files changed, 5 insertions, 4 deletions
diff --git a/chrome/browser/ui/views/tabs/browser_tab_strip_controller.cc b/chrome/browser/ui/views/tabs/browser_tab_strip_controller.cc
index 6aedb9b..e4f195c 100644
--- a/chrome/browser/ui/views/tabs/browser_tab_strip_controller.cc
+++ b/chrome/browser/ui/views/tabs/browser_tab_strip_controller.cc
@@ -388,7 +388,7 @@ void BrowserTabStripController::TabInsertedAt(WebContents* contents,
                                               int model_index,
                                               bool is_active) {
   DCHECK(contents);
-  DCHECK(model_->ContainsIndex(model_index));
+  CHECK(model_->ContainsIndex(model_index));
   AddTab(contents, model_index, is_active);
 }
 
diff --git a/chrome/browser/ui/views/tabs/tab_strip.cc b/chrome/browser/ui/views/tabs/tab_strip.cc
index 5e40997..f4b8cfb 100644
--- a/chrome/browser/ui/views/tabs/tab_strip.cc
+++ b/chrome/browser/ui/views/tabs/tab_strip.cc
@@ -1638,6 +1638,7 @@ Tab* TabStrip::CreateTab() {
 }
 
 void TabStrip::StartInsertTabAnimation(int model_index) {
+  CHECK_LT(model_index, tabs_.view_size());
   PrepareForAnimation();
 
   // The TabStrip can now use its entire width to lay out Tabs.
@@ -1645,7 +1646,7 @@ void TabStrip::StartInsertTabAnimation(int model_index) {
   available_width_for_tabs_ = -1;
 
   GenerateIdealBounds();
-
+  CHECK_LT(model_index, tabs_.view_size());
   Tab* tab = tab_at(model_index);
   if (model_index == 0) {
     tab->SetBounds(0, ideal_bounds(model_index).y(), 0,
diff --git a/ui/views/view_model.cc b/ui/views/view_model.cc
index 5f492f5..c6b4672 100644
--- a/ui/views/view_model.cc
+++ b/ui/views/view_model.cc
@@ -17,8 +17,8 @@ ViewModel::~ViewModel() {
 }
 
 void ViewModel::Add(View* view, int index) {
-  DCHECK_LE(index, static_cast<int>(entries_.size()));
-  DCHECK_GE(index, 0);
+  CHECK_LE(index, static_cast<int>(entries_.size()));
+  CHECK_GE(index, 0);
   Entry entry;
   entry.view = view;
   entries_.insert(entries_.begin() + index, entry);