Implementation of subresource integrity attribute for secure origins.

Source/core/frame/SubresourceIntegrity.h

Index: Source/core/frame/SubresourceIntegrity.h
diff --git a/Source/core/frame/SubresourceIntegrity.h b/Source/core/frame/SubresourceIntegrity.h
new file mode 100644
index 0000000000000000000000000000000000000000..f17cf51ad000dd604dd4b4e6965fff115c262ff0
--- /dev/null
+++ b/Source/core/frame/SubresourceIntegrity.h
@@ -0,0 +1,29 @@
+// 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.
+
+#ifndef SubresourceIntegrity_h
+#define SubresourceIntegrity_h
+
+#include "platform/Crypto.h"
+
+namespace WTF {
+class String;
+};
+
+namespace blink {
+
+class Element;
+class KURL;
+
+class SubresourceIntegrity {
+public:
+    static bool CheckSubresourceIntegrity(const Element&, const WTF::String&, const KURL& resourceUrl);
+
+private:
+    static bool parseIntegrityAttribute(const WTF::String& attribute, WTF::String& integrity, HashAlgorithm&);

[Mike West, 2014/09/16 06:45:04]

These are both very unit-testable methods. I'd suggesting adding a
'SubresourceIntegrityTest.cpp' file with some unit tests in addition to the
(nice!) layout tests you've already added. See
'Source/platform/weborigin/SecurityOriginTest.cpp' for an example of how those
tests might look.

[jww, 2014/09/16 22:34:49]

Done.

+};
+
+} // namespace blink
+
+#endif