Move IsValidOriginIdentifier into appropriate header

content/common/database_identifier_unittest.cc

 // Copyright 2014 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.
 
 #include "storage/common/database/database_identifier.h"
 
 #include <stddef.h>
 
 #include "base/macros.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 227 matching lines @@
         DatabaseIdentifier::Parse(bogus_components[i]);
     EXPECT_EQ("__0", identifier.ToString())
         << "test case " << bogus_components[i];
     EXPECT_EQ(GURL("null"), identifier.ToOrigin())
         << "test case " << bogus_components[i];
     EXPECT_EQ(true, identifier.is_unique())
         << "test case " << bogus_components[i];
   }
 }
 
+static GURL ToAndFromOriginIdentifier(const GURL origin_url) {
+  std::string id = storage::GetIdentifierFromOrigin(origin_url);
+  return storage::GetOriginFromIdentifier(id);
+}
+
+static void TestValidOriginIdentifier(bool expected_result,
+                                      const std::string& id) {
+  EXPECT_EQ(expected_result,
+            storage::IsValidOriginIdentifier(id));
+}
+
+TEST(DatabaseIdentifierTest, OriginIdentifiers) {

[jsbell, 2016/03/02 20:29:09]

These are probably redundant with above cases. Left it alone for now but I can
consolidate in this CL or a follow-up.

+  const GURL kFileOrigin(GURL("file:///").GetOrigin());
+  const GURL kHttpOrigin(GURL("http://bar/").GetOrigin());
+  EXPECT_EQ(kFileOrigin, ToAndFromOriginIdentifier(kFileOrigin));
+  EXPECT_EQ(kHttpOrigin, ToAndFromOriginIdentifier(kHttpOrigin));
+}
+
+TEST(DatabaseIdentifierTest, IsValidOriginIdentifier) {
+  TestValidOriginIdentifier(true,  "http_bar_0");
+  TestValidOriginIdentifier(false,  "");
+  TestValidOriginIdentifier(false, "bad..id");
+  TestValidOriginIdentifier(false, "bad/id");
+  TestValidOriginIdentifier(false, "bad\\id");
+  TestValidOriginIdentifier(false, "http_bad:0_2");
+  TestValidOriginIdentifier(false, std::string("bad\0id", 6));
+}
+
 }  // namespace
 }  // namespace content