Move trial token code to content/common.

content/renderer/origin_trials/trial_token_validator.cc

-// Copyright 2016 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.
-
-#include "content/renderer/origin_trials/trial_token_validator.h"
-
-#include "base/time/time.h"
-#include "content/public/common/content_client.h"
-#include "content/public/renderer/content_renderer_client.h"
-#include "content/renderer/origin_trials/trial_token.h"
-
-namespace content {
-
-TrialTokenValidator::TrialTokenValidator() {}
-TrialTokenValidator::~TrialTokenValidator() {}
-
-bool TrialTokenValidator::validateToken(const blink::WebString& token,
-                                        const blink::WebSecurityOrigin& origin,
-                                        const blink::WebString& featureName) {
-  scoped_ptr<TrialToken> trial_token = TrialToken::Parse(token.utf8());
-
-  ContentClient* content_client = GetContentClient();
-  CHECK(content_client);
-
-  base::StringPiece public_key =
-      content_client->renderer()->GetOriginTrialPublicKey();
-
-  return !public_key.empty() && trial_token &&
-         trial_token->IsAppropriate(origin, featureName.utf8()) &&
-         trial_token->IsValid(base::Time::Now(), public_key);
-}
-
-}  // namespace content