Make tests that rely on getting a temp dir exit if they don't.

webkit/database/database_tracker_unittest.cc

Index: webkit/database/database_tracker_unittest.cc
diff --git a/webkit/database/database_tracker_unittest.cc b/webkit/database/database_tracker_unittest.cc
index 8bb3f2470e15ab62370fe4c24a58a14084fcc249..bc255ddcce88f7ecbf672607a88d34e702780711 100644
--- a/webkit/database/database_tracker_unittest.cc
+++ b/webkit/database/database_tracker_unittest.cc
@@ -82,7 +82,7 @@ class DatabaseTracker_TestHelper_Test {
   static void TestDeleteOpenDatabase(bool incognito_mode) {
     // Initialize the tracker database.
     ScopedTempDir temp_dir;
-    EXPECT_TRUE(temp_dir.CreateUniqueTempDir());
+    ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
     scoped_refptr<DatabaseTracker> tracker(
         new DatabaseTracker(temp_dir.path(), incognito_mode));
 
@@ -181,7 +181,7 @@ class DatabaseTracker_TestHelper_Test {
   static void TestDatabaseTracker(bool incognito_mode) {
     // Initialize the tracker database.
     ScopedTempDir temp_dir;
-    EXPECT_TRUE(temp_dir.CreateUniqueTempDir());
+    ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
     scoped_refptr<DatabaseTracker> tracker(
         new DatabaseTracker(temp_dir.path(), incognito_mode));