Profile shouldn't own background page stuff.

chrome/test/testing_profile.cc

Index: chrome/test/testing_profile.cc
diff --git a/chrome/test/testing_profile.cc b/chrome/test/testing_profile.cc
index cab23da9f53d779854510a576988a1c9bc4c7bc8..e8295229b39ef9e555ac05e7a1d4c32236ffee3e 100644
--- a/chrome/test/testing_profile.cc
+++ b/chrome/test/testing_profile.cc
@@ -13,6 +13,7 @@
 #include "base/path_service.h"
 #include "base/string_number_conversions.h"
 #include "chrome/browser/autocomplete/autocomplete_classifier.h"
+#include "chrome/browser/background_contents_service_factory.h"
 #include "chrome/browser/bookmarks/bookmark_model.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/custom_handlers/protocol_handler_registry.h"
@@ -179,6 +180,8 @@ TestingProfile::TestingProfile()
   }
 
   // Install profile keyed service factory hooks for dummy/test services
+  BackgroundContentsServiceFactory::GetInstance()->ForceAssociationBetween(
+      this, NULL);
   DesktopNotificationServiceFactory::GetInstance()->set_test_factory(
       &CreateTestDesktopNotificationService);
   DesktopNotificationServiceFactory::GetInstance()->ForceAssociationBetween(
@@ -699,11 +702,6 @@ NTPResourceCache* TestingProfile::GetNTPResourceCache() {
   return ntp_resource_cache_.get();
 }
 
-BackgroundContentsService*
-TestingProfile::GetBackgroundContentsService() const {
-  return NULL;
-}
-
 StatusTray* TestingProfile::GetStatusTray() {
   return NULL;
 }