Spelling correction: "nonexistant" -> "nonexistent".

app/sql/transaction.cc

Index: app/sql/transaction.cc
diff --git a/app/sql/transaction.cc b/app/sql/transaction.cc
index 79a198bbc983b9e3e35a00133d7834821643cc56..10bcfb0a9e3c3682b9b0cd14823065712090363a 100644
--- a/app/sql/transaction.cc
+++ b/app/sql/transaction.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -30,7 +30,7 @@ bool Transaction::Begin() {
 
 void Transaction::Rollback() {
   if (!is_open_) {
-    NOTREACHED() << "Attempting to roll back a nonexistant transaction. "
+    NOTREACHED() << "Attempting to roll back a nonexistent transaction. "
                  << "Did you remember to call Begin() and check its return?";
     return;
   }
@@ -40,7 +40,7 @@ void Transaction::Rollback() {
 
 bool Transaction::Commit() {
   if (!is_open_) {
-    NOTREACHED() << "Attempting to commit a nonexistant transaction. "
+    NOTREACHED() << "Attempting to commit a nonexistent transaction. "
                  << "Did you remember to call Begin() and check its return?";
     return false;
   }