Delete HostDelegate objects instead of HostImpl objects to avoid leaking the former.

content/browser/browser_child_process_host_impl.cc

Index: content/browser/browser_child_process_host_impl.cc
diff --git a/content/browser/browser_child_process_host_impl.cc b/content/browser/browser_child_process_host_impl.cc
index 75a49ee824c7190c9df7d2f81e8f1602e295eaec..b2c231dfa444e9a578a392a3fee4b127eaf9e73e 100644
--- a/content/browser/browser_child_process_host_impl.cc
+++ b/content/browser/browser_child_process_host_impl.cc
@@ -105,7 +105,10 @@ void BrowserChildProcessHostImpl::TerminateAll() {
   // Make a copy since the BrowserChildProcessHost dtor mutates the original
   // list.
   BrowserChildProcessList copy = g_child_process_list.Get();
-  STLDeleteElements(&copy);
+  for (BrowserChildProcessList::iterator it = copy.begin();
+       it != copy.end(); ++it) {
+    delete (*it)->delegate();  // ~*HostDelegate deletes *HostImpl.
+  }
 }
 
 void BrowserChildProcessHostImpl::Launch(