Resubmit: Block content scripts from executing until user grants permission

chrome/common/extensions/manifest_handlers/content_scripts_manifest_unittest.cc

 // Copyright (c) 2013 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 "base/command_line.h"
 #include "base/strings/string_number_conversions.h"
 #include "chrome/common/extensions/manifest_handlers/content_scripts_handler.h"
 #include "chrome/common/extensions/manifest_tests/extension_manifest_test.h"
 #include "extensions/common/error_utils.h"
 #include "extensions/common/extension.h"
@@ skipping 49 matching lines @@
   URLPatternSet scriptable_hosts =
       ContentScriptsInfo::GetScriptableHosts(extension.get());
 
   URLPatternSet expected;
   expected.AddPattern(
       URLPattern(URLPattern::SCHEME_HTTP, "http://yahoo.com/*"));
 
   EXPECT_EQ(expected, scriptable_hosts);
 }
 
+TEST_F(ContentScriptsManifestTest, ContentScriptIds) {
+  scoped_refptr<Extension> extension1 =
+      LoadAndExpectSuccess("content_script_yahoo.json");
+  scoped_refptr<Extension> extension2 =
+      LoadAndExpectSuccess("content_script_yahoo.json");
+  const UserScriptList& user_scripts1 =
+      ContentScriptsInfo::GetContentScripts(extension1);
+  ASSERT_EQ(1u, user_scripts1.size());
+  int64 id = user_scripts1[0].id();
+  const UserScriptList& user_scripts2 =
+      ContentScriptsInfo::GetContentScripts(extension2);
+  ASSERT_EQ(1u, user_scripts2.size());
+  // The id of the content script should be one higher than the previous.
+  EXPECT_EQ(id + 1, user_scripts2[0].id());
+}
+
 }  // namespace extensions