html_viewer: Move webcrypto to a place where html_viewer can use it.

components/webcrypto/webcrypto_impl.h

 // 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 CONTENT_CHILD_WEBCRYPTO_WEBCRYPTO_IMPL_H_
 #define CONTENT_CHILD_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"
 #include "third_party/WebKit/public/platform/WebVector.h"
 
-namespace content {
+namespace components {
+namespace webcrypto {
 
 // Wrapper around the Blink WebCrypto asynchronous interface, which forwards to
 // the synchronous platform (NSS or OpenSSL) implementation.
 //
 // WebCryptoImpl is threadsafe.
 //
 // EnsureInit() must be called prior to using methods on WebCryptoImpl().
 class WebCryptoImpl : public blink::WebCrypto {
  public:
   WebCryptoImpl();
@@ skipping 90 matching lines @@
       unsigned key_data_size,
       blink::WebCryptoKey& key);
 
   virtual bool serializeKeyForClone(const blink::WebCryptoKey& key,
                                     blink::WebVector<unsigned char>& key_data);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(WebCryptoImpl);
 };
 
-}  // namespace content
+}  // namespace webcrypto
+}  // namespace components
 
 #endif  // CONTENT_CHILD_WEBCRYPTO_WEBCRYPTO_IMPL_H_