Add content implementation of digestSynchcronous.

content/renderer/webcrypto/webcrypto_impl.h

 // 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.
 
 #ifndef CONTENT_RENDERER_WEBCRYPTO_WEBCRYPTO_IMPL_H_
 #define CONTENT_RENDERER_WEBCRYPTO_WEBCRYPTO_IMPL_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "third_party/WebKit/public/platform/WebCrypto.h"
+#include "third_party/WebKit/public/platform/WebCryptoAlgorithm.h"
 
 namespace content {
 
 // Wrapper around the blink WebCrypto asynchronous interface, which forwards to
 // the synchronous platfrom (NSS or OpenSSL) implementation.
 //
 // TODO(eroman): Post the synchronous work to a background thread.
 class WebCryptoImpl : public blink::WebCrypto {
  public:
   WebCryptoImpl();
@@ skipping 32 matching lines @@
                     const unsigned char* data,
                     unsigned int data_size,
                     blink::WebCryptoResult result);
   virtual void verifySignature(const blink::WebCryptoAlgorithm& algorithm,
                                const blink::WebCryptoKey& key,
                                const unsigned char* signature,
                                unsigned int signature_size,
                                const unsigned char* data,
                                unsigned int data_size,
                                blink::WebCryptoResult result);
+  virtual bool digestSynchronous(const blink::WebCryptoAlgorithmId algorithm,
+                                 const unsigned char* data,
+                                 unsigned int data_size,
+                                 blink::WebArrayBuffer& result);

[eroman, 2014/02/21 23:11:20]

Have you tested if this works? Try adding an OVERRIDE as a test to make sure the
signature is right. I seem to remember we settled on WebVector rather than
WebArrayBuffer.

Other than that, L G T M.

[jww, 2014/02/21 23:23:34]

In the end, you approved the version that was WebArrayBuffer and that's what was
committed. I've definitely confirmed locally that this works.

 
  private:
   DISALLOW_COPY_AND_ASSIGN(WebCryptoImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_WEBCRYPTO_WEBCRYPTO_IMPL_H_