Helper functions for tracking stale TabContentsDelegate's.

content/browser/tab_contents/tab_contents_delegate.cc

Index: content/browser/tab_contents/tab_contents_delegate.cc
diff --git a/content/browser/tab_contents/tab_contents_delegate.cc b/content/browser/tab_contents/tab_contents_delegate.cc
index df709a7f3549d644f105f444c44fa39572fa83ec..e10aa4597fef82946d51a2ac0e9e2ada0fb535c9 100644
--- a/content/browser/tab_contents/tab_contents_delegate.cc
+++ b/content/browser/tab_contents/tab_contents_delegate.cc
@@ -237,5 +237,16 @@ TabContentsDelegate::GetJavaScriptDialogCreator() {
   return JavaScriptDialogCreatorStub::GetInstance();
 }
 
+void TabContentsDelegate::Attach(TabContents* tab_contents) {

[sky, 2011/06/23 18:27:32]

Position should match header.

[cbentzel, 2011/06/23 18:38:13]

Done.

+  CHECK(attached_contents_.find(tab_contents) == attached_contents_.end());
+  attached_contents_.insert(tab_contents);
+}
+
+void TabContentsDelegate::Detach(TabContents* tab_contents) {
+  CHECK(attached_contents_.find(tab_contents) != attached_contents_.end());
+  attached_contents_.erase(tab_contents);
+}
+
 TabContentsDelegate::~TabContentsDelegate() {
+  CHECK(attached_contents_.empty());
 }