Consistently use notifications from component updater w/ on-demand PNaCl.

chrome/browser/component_updater/test/component_updater_service_unittest.h

Index: chrome/browser/component_updater/test/component_updater_service_unittest.h
diff --git a/chrome/browser/component_updater/test/component_updater_service_unittest.h b/chrome/browser/component_updater/test/component_updater_service_unittest.h
index ba98102137d871c08448c68634ec7dc664b4ac03..573e1a323d26491a3094faa200ad403d04bf909c 100644
--- a/chrome/browser/component_updater/test/component_updater_service_unittest.h
+++ b/chrome/browser/component_updater/test/component_updater_service_unittest.h
@@ -93,6 +93,27 @@ class TestConfigurator : public ComponentUpdateService::Configurator {
   ComponentUpdateService* cus_;
 };
 
+// TestNotificationTracker does not keep a deep copy of the source,
+// so we will need to for testing. The test does not inspect the observations
+// as they occur -- only post mortem.  Otherwise, the tester will end up
+// dereferencing an already-deallocated pointer.
+class TestUpdateNotificationTracker : public TestNotificationTracker {
+public:
+  TestUpdateNotificationTracker();
+  virtual ~TestUpdateNotificationTracker();
+
+  std::string SourceAt(size_t num);
+
+  virtual void Reset() OVERRIDE;
+
+private:
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details) OVERRIDE;
+
+  std::vector<std::string> sources_;
+};
+
 class ComponentUpdaterTest : public testing::Test {
  public:
   enum TestComponents {
@@ -112,7 +133,7 @@ class ComponentUpdaterTest : public testing::Test {
   // Makes the full path to a component updater test file.
   const base::FilePath test_file(const char* file);
 
-  TestNotificationTracker& notification_tracker();
+  TestUpdateNotificationTracker& notification_tracker();
 
   TestConfigurator* test_configurator();
 
@@ -124,7 +145,7 @@ class ComponentUpdaterTest : public testing::Test {
  private:
   scoped_ptr<ComponentUpdateService> component_updater_;
   base::FilePath test_data_dir_;
-  TestNotificationTracker notification_tracker_;
+  TestUpdateNotificationTracker notification_tracker_;
   TestConfigurator* test_config_;
 };