Move webcrypto to child/ and add support to worker_webkitplatformsupport.

content/worker/worker_webkitplatformsupport_impl.cc

Index: content/worker/worker_webkitplatformsupport_impl.cc
diff --git a/content/worker/worker_webkitplatformsupport_impl.cc b/content/worker/worker_webkitplatformsupport_impl.cc
index cb4d8550b0d440aa006ea5dbb4333f4906ef0935..4e78345d347367ee15393ac34c98afb4c4790eb6 100644
--- a/content/worker/worker_webkitplatformsupport_impl.cc
+++ b/content/worker/worker_webkitplatformsupport_impl.cc
@@ -18,6 +18,7 @@
 #include "content/child/thread_safe_sender.h"
 #include "content/child/web_database_observer_impl.h"
 #include "content/child/webblobregistry_impl.h"
+#include "content/child/webcrypto/webcrypto_impl.h"
 #include "content/child/webfileutilities_impl.h"
 #include "content/child/webmessageportchannel_impl.h"
 #include "content/common/file_utilities_messages.h"
@@ -297,6 +298,12 @@ WebBlobRegistry* WorkerWebKitPlatformSupportImpl::blobRegistry() {
   return blob_registry_.get();
 }
 
+blink::WebCrypto* WorkerWebKitPlatformSupportImpl::crypto() {
+  if (!web_crypto_)
+    web_crypto_.reset(new WebCryptoImpl());
+  return web_crypto_.get();
+}
+
 void WorkerWebKitPlatformSupportImpl::queryStorageUsageAndQuota(
     const blink::WebURL& storage_partition,
     blink::WebStorageQuotaType type,