Fixed issue with DownloadTestObserver.

chrome/browser/download/download_test_observer.cc

Index: chrome/browser/download/download_test_observer.cc
diff --git a/chrome/browser/download/download_test_observer.cc b/chrome/browser/download/download_test_observer.cc
index 0cbcd0cea8b94433513d612add42506e05ecc87b..729d5bbc4e0846edf716a15b5c9af47247778ca3 100644
--- a/chrome/browser/download/download_test_observer.cc
+++ b/chrome/browser/download/download_test_observer.cc
@@ -55,6 +55,8 @@ DownloadTestObserver::DownloadTestObserver(
       dangerous_download_action_(dangerous_download_action) {
   download_manager_->AddObserver(this);  // Will call initial ModelChanged().
   finished_downloads_at_construction_ = finished_downloads_.size();
+  // Move the finished other downloads to an exclusion list.
+  finished_other_downloads_.swap(previously_finished_downloads_);
   EXPECT_NE(DownloadItem::REMOVING, download_finished_state)
       << "Waiting for REMOVING is not supported.  Try COMPLETE.";
 }
@@ -73,11 +75,17 @@ void DownloadTestObserver::WaitForFinished() {
     ui_test_utils::RunMessageLoop();
     waiting_ = false;
   }
+
+  // We do not expect to see downloads finishing in the wrong state.
+  EXPECT_EQ(0u, finished_other_downloads_.size());
 }
 
 bool DownloadTestObserver::IsFinished() const {
-  if (finished_downloads_.size() - finished_downloads_at_construction_ >=
-      wait_count_)
+  size_t finished_download_count =
+      finished_downloads_.size() +
+      finished_other_downloads_.size() -
+      finished_downloads_at_construction_;
+  if (finished_download_count >= wait_count_)
     return true;
   return (finish_on_select_file_ && select_file_dialog_seen_);
 }
@@ -131,6 +139,8 @@ void DownloadTestObserver::OnDownloadUpdated(DownloadItem* download) {
 
   if (download->GetState() == download_finished_state_) {
     DownloadInFinalState(download);
+  } else if (download->GetState() != DownloadItem::IN_PROGRESS) {
+    DownloadInTerminalState(download);
   }
 }
 
@@ -182,9 +192,13 @@ size_t DownloadTestObserver::NumDangerousDownloadsSeen() const {
   return dangerous_downloads_seen_.size();
 }
 
+size_t DownloadTestObserver::NumOtherDownloadsSeen() const {
+  return finished_other_downloads_.size();
+}
+
 void DownloadTestObserver::DownloadInFinalState(DownloadItem* download) {
   if (finished_downloads_.find(download) != finished_downloads_.end()) {
-    // We've already seen terminal state on this download.
+    // We've already seen the final state on this download.
     return;
   }
 
@@ -194,6 +208,34 @@ void DownloadTestObserver::DownloadInFinalState(DownloadItem* download) {
   SignalIfFinished();
 }
 
+void DownloadTestObserver::DownloadInTerminalState(DownloadItem* download) {
+  if (finished_downloads_.find(download) != finished_downloads_.end()) {
+    // We've already seen the final state on this download.
+    return;
+  }
+
+  if (previously_finished_downloads_.find(download) !=
+    previously_finished_downloads_.end()) {
+      // These occurred before we were constructed.
+      return;
+  }
+
+  if (finished_other_downloads_.find(download) !=
+      finished_other_downloads_.end()) {
+    // We've already seen the terminal state on this download.
+    return;
+  }
+
+  // Record the transition to a final state.
+  finished_other_downloads_.insert(download);
+
+  LOG(WARNING) << " " << __FUNCTION__ << "()"
+               << " download = " << download->DebugString(true);
+
+  SignalIfFinished();
+}
+
+
 void DownloadTestObserver::SignalIfFinished() {
   if (waiting_ && IsFinished())
     MessageLoopForUI::current()->Quit();