Fix password automation hooks to get pyauto test testSavePassword working.

content/browser/cancelable_request.h

Index: content/browser/cancelable_request.h
diff --git a/content/browser/cancelable_request.h b/content/browser/cancelable_request.h
index 009ca98bf84e591ccabd65391f985eb0184860c2..3c68005286f4bd7af0f1ff8c8d5e2afcc1b8f221 100644
--- a/content/browser/cancelable_request.h
+++ b/content/browser/cancelable_request.h
@@ -139,6 +139,10 @@ class CancelableRequestProvider {
   // which will also set some state on the request).
   void RequestCompleted(Handle handle);
 
+  // Identifies whether or not the specified request has already been completed
+  // or canceled, according to whether it exists in |completed_requests_|.
+  bool IsRequestCompleted(Handle handle);
+
  private:
   typedef std::map<Handle, scoped_refptr<CancelableRequestBase> >
       CancelableRequestMap;
@@ -153,6 +157,9 @@ class CancelableRequestProvider {
   // Lists all outstanding requests. Protected by the |lock_|.
   CancelableRequestMap pending_requests_;
 
+  // Lists all completed or canceled requests.  Protected by the |lock_|.
+  CancelableRequestMap completed_requests_;
+
   // The next handle value we will return. Protected by the |lock_|.
   int next_handle_;
 
@@ -541,8 +548,10 @@ class CancelableRequestBase
   // Tells the provider that the request is complete, which then tells the
   // consumer.
   void NotifyCompleted() const {
-    provider_->RequestCompleted(handle());
-    consumer_->DidExecute(provider_, handle_);
+    if (!provider_->IsRequestCompleted(handle())) {
+      provider_->RequestCompleted(handle());
+      consumer_->DidExecute(provider_, handle_);
+    }
   }
 
   // Cover method for CancelableRequestConsumerBase::WillExecute.