[Experimental Framework] Move the trial token public key out of content and into the embedder.

chrome/common/origin_trials/origin_trial_key_manager.cc

+// Copyright (c) 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 "chrome/common/origin_trials/origin_trial_key_manager.h"
+
+#include <stdint.h>
+
+// This is the default public key used for validating signatures.
+// TODO(iclelland): Provide a mechanism to allow for multiple signing keys.
+// https://crbug.com/543220
+// TODO(iclelland): Provide a mechanism to override, replace or disable this key
+// with field trials.
+static const uint8_t kPublicKey[] = {
+    0x7c, 0xc4, 0xb8, 0x9a, 0x93, 0xba, 0x6e, 0xe2, 0xd0, 0xfd, 0x03,
+    0x1d, 0xfb, 0x32, 0x66, 0xc7, 0x3b, 0x72, 0xfd, 0x54, 0x3a, 0x07,
+    0x51, 0x14, 0x66, 0xaa, 0x02, 0x53, 0x4e, 0x33, 0xa1, 0x15,
+};
+
+base::StringPiece ChromeOriginTrialKeyManager::GetPublicKey() {

[chasej, 2016/02/05 19:35:28]

The file name doesn't match the class name. I would have expected the file name
to be chrome_origin_trial_key_manager.cc.

[iclelland, 2016/02/05 20:18:08]

Renamed class to match filename instead.

+  return base::StringPiece(reinterpret_cast<const char*>(kPublicKey),
+                           arraysize(kPublicKey));
+}