Disambiguate OnMouseCaptureLost from OnMouseReleased, etc.

chrome/browser/chromeos/panels/panel_scroller_header.cc

Index: chrome/browser/chromeos/panels/panel_scroller_header.cc
diff --git a/chrome/browser/chromeos/panels/panel_scroller_header.cc b/chrome/browser/chromeos/panels/panel_scroller_header.cc
index 62574473b3261a425cd287f280e031e51875dfb6..913f9cf189e632c3dc9a0799fc95a3ebc8376a60 100644
--- a/chrome/browser/chromeos/panels/panel_scroller_header.cc
+++ b/chrome/browser/chromeos/panels/panel_scroller_header.cc
@@ -18,6 +18,10 @@ PanelScrollerHeader::PanelScrollerHeader(PanelScroller* scroller)
 PanelScrollerHeader::~PanelScrollerHeader() {
 }
 
+gfx::Size PanelScrollerHeader::GetPreferredSize() {
+  return gfx::Size(size().width(), 18);
+}
+
 bool PanelScrollerHeader::OnMousePressed(const views::MouseEvent& event) {
   return true;
 }
@@ -26,13 +30,12 @@ bool PanelScrollerHeader::OnMouseDragged(const views::MouseEvent& event) {
   return false;
 }
 
-void PanelScrollerHeader::OnMouseReleased(const views::MouseEvent& event,
-                                          bool canceled) {
+void PanelScrollerHeader::OnMouseReleased(const views::MouseEvent& event) {
   scroller_->HeaderClicked(this);
 }
 
-gfx::Size PanelScrollerHeader::GetPreferredSize() {
-  return gfx::Size(size().width(), 18);
+void PanelScrollerHeader::OnMouseCaptureLost() {
+  scroller_->HeaderClicked(this);
 }
 
 void PanelScrollerHeader::OnPaint(gfx::Canvas* canvas) {