Create blobs from Disk Cache entries.

content/common/resource_messages.cc

Index: content/common/resource_messages.cc
diff --git a/content/common/resource_messages.cc b/content/common/resource_messages.cc
index 6fcda2ab0218b085e1fb4944140fce76abe1ebc3..733162a2f3f5c47d0c4c00a2ae96d8837fd28ef5 100644
--- a/content/common/resource_messages.cc
+++ b/content/common/resource_messages.cc
@@ -54,13 +54,18 @@ void ParamTraits<storage::DataElement>::Write(Message* m, const param_type& p) {
       WriteParam(m, p.expected_modification_time());
       break;
     }
-    default: {
-      DCHECK(p.type() == storage::DataElement::TYPE_BLOB);
+    case storage::DataElement::TYPE_BLOB: {
       WriteParam(m, p.blob_uuid());
       WriteParam(m, p.offset());
       WriteParam(m, p.length());
       break;
     }
+    case storage::DataElement::TYPE_DISK_CACHE_ENTRY:  // Can't be sent via IPC.
+      NOTREACHED();
+      break;
+    case storage::DataElement::TYPE_UNKNOWN:
+      NOTREACHED();
+      break;
   }
 }