Fixes an issue when the owner key is empty chrome would crash trying to access bogus memory.

chrome/browser/chromeos/login/owner_key_utils_unittest.cc

Index: chrome/browser/chromeos/login/owner_key_utils_unittest.cc
diff --git a/chrome/browser/chromeos/login/owner_key_utils_unittest.cc b/chrome/browser/chromeos/login/owner_key_utils_unittest.cc
index 916b707b163ea5768737dbfa9d7bc50bd6b02c71..46db487237476e7aef08cfbb287314bdb2709c1c 100644
--- a/chrome/browser/chromeos/login/owner_key_utils_unittest.cc
+++ b/chrome/browser/chromeos/login/owner_key_utils_unittest.cc
@@ -65,4 +65,20 @@ TEST_F(OwnerKeyUtilsTest, ExportImportPublicKey) {
   }
 }
 
+TEST_F(OwnerKeyUtilsTest, ImportPublicKeyFailed) {
+  ScopedTempDir tmpdir;
+  FilePath tmpfile;
+  ASSERT_TRUE(tmpdir.CreateUniqueTempDir());
+
+  // First test the case where the file is missing which should fail.
+  std::vector<uint8> from_disk;
+  ASSERT_FALSE(utils_->ImportPublicKey(tmpfile, &from_disk));
+
+  // Next try empty file. This should fail and the array should be empty.
+  from_disk.resize(10);
+  ASSERT_TRUE(file_util::CreateTemporaryFileInDir(tmpdir.path(), &tmpfile));
+  ASSERT_FALSE(utils_->ImportPublicKey(tmpfile, &from_disk));
+  ASSERT_FALSE(from_disk.size());
+}
+
 }  // namespace chromeos