[Extensions Toolbar] Protect against crazy bounds

chrome/browser/ui/views/toolbar/extension_toolbar_menu_view.h

Index: chrome/browser/ui/views/toolbar/extension_toolbar_menu_view.h
diff --git a/chrome/browser/ui/views/toolbar/extension_toolbar_menu_view.h b/chrome/browser/ui/views/toolbar/extension_toolbar_menu_view.h
index 0b86ffb1981f86dacb5c12045661277b716b2cb5..352fe98b629044de87b33409d998b36ea63373b6 100644
--- a/chrome/browser/ui/views/toolbar/extension_toolbar_menu_view.h
+++ b/chrome/browser/ui/views/toolbar/extension_toolbar_menu_view.h
@@ -8,7 +8,7 @@
 #include "base/memory/weak_ptr.h"
 #include "base/scoped_observer.h"
 #include "chrome/browser/ui/views/toolbar/browser_actions_container_observer.h"
-#include "ui/views/view.h"
+#include "ui/views/controls/scroll_view.h"
 
 class Browser;
 class BrowserActionsContainer;
@@ -19,7 +19,7 @@ class WrenchMenu;
 // the wrench menu.
 // In the event that the WrenchMenu was opened for an Extension Action drag-and-
 // drop, this will also close the menu upon completion.
-class ExtensionToolbarMenuView : public views::View,
+class ExtensionToolbarMenuView : public views::ScrollView,
                                  public BrowserActionsContainerObserver {
  public:
   ExtensionToolbarMenuView(Browser* browser, WrenchMenu* wrench_menu);
@@ -58,6 +58,9 @@ class ExtensionToolbarMenuView : public views::View,
   // The overflow BrowserActionsContainer which is nested in this view.
   BrowserActionsContainer* container_;
 
+  // The maximum allowed height for the view.
+  int max_height_;
+
   ScopedObserver<BrowserActionsContainer, BrowserActionsContainerObserver>
       browser_actions_container_observer_;