Disambiguate OnMouseCaptureLost from OnMouseReleased, etc.

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

Index: chrome/browser/ui/views/tabs/base_tab.cc
diff --git a/chrome/browser/ui/views/tabs/base_tab.cc b/chrome/browser/ui/views/tabs/base_tab.cc
index cef7d9c4a2b5838cb4b3a038e2f76fae7ab8e974..87290ed25bb518ad108131a3a7877d3e602a2178 100644
--- a/chrome/browser/ui/views/tabs/base_tab.cc
+++ b/chrome/browser/ui/views/tabs/base_tab.cc
@@ -315,7 +315,7 @@ bool BaseTab::OnMouseDragged(const views::MouseEvent& event) {
   return true;
 }
 
-void BaseTab::OnMouseReleased(const views::MouseEvent& event, bool canceled) {
+void BaseTab::OnMouseReleased(const views::MouseEvent& event) {
   if (!controller())
     return;
 
@@ -324,7 +324,7 @@ void BaseTab::OnMouseReleased(const views::MouseEvent& event, bool canceled) {
   // In some cases, ending the drag will schedule the tab for destruction; if
   // so, bail immediately, since our members are already dead and we shouldn't
   // do anything else except drop the tab where it is.
-  if (controller()->EndDrag(canceled))
+  if (controller()->EndDrag(false))
     return;
 
   // Close tab on middle click, but only if the button is released over the tab
@@ -352,6 +352,11 @@ void BaseTab::OnMouseReleased(const views::MouseEvent& event, bool canceled) {
   }
 }
 
+void BaseTab::OnMouseCaptureLost() {
+  if (controller())
+    controller()->EndDrag(true);
+}
+
 void BaseTab::OnMouseEntered(const views::MouseEvent& event) {
   if (!hover_animation_.get()) {
     hover_animation_.reset(new ui::SlideAnimation(this));