Refactor CRX verification in preparation to support CRX₃ files.

extensions/browser/sandboxed_unpacker_unittest.cc

Index: extensions/browser/sandboxed_unpacker_unittest.cc
diff --git a/extensions/browser/sandboxed_unpacker_unittest.cc b/extensions/browser/sandboxed_unpacker_unittest.cc
index 8330efa65af7ccc574ba5ea2ecdb8bc7e19d5d0d..1b6e71e68936f11a076c66313bf962dc475e02fd 100644
--- a/extensions/browser/sandboxed_unpacker_unittest.cc
+++ b/extensions/browser/sandboxed_unpacker_unittest.cc
@@ -168,7 +168,7 @@ TEST_F(SandboxedUnpackerTest, FromDirWithCatalogsSuccess) {
 TEST_F(SandboxedUnpackerTest, FailHashCheck) {
   base::CommandLine::ForCurrentProcess()->AppendSwitch(
       extensions::switches::kEnableCrxHashCheck);
-  SetupUnpacker("good_l10n.crx", "badhash");
+  SetupUnpacker("good_l10n.crx", std::string(64, '0'));
   // Check that there is an error message.
   EXPECT_NE(base::string16(), GetInstallError());
 }