ServiceWorker: Enable UseCounter for ServiceWorkerGlobalScope

content/common/service_worker/embedded_worker_messages.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.
 
 // Message definition file, included multiple times, hence no include guard.
 
 #include <stdint.h>
 
 #include <string>
 
@@ skipping 72 matching lines @@
                      bool /* success */)
 
 // Renderer -> Browser message to indicate that the worker is started.
 IPC_MESSAGE_CONTROL1(EmbeddedWorkerHostMsg_WorkerStarted,
                      int /* embedded_worker_id */)
 
 // Renderer -> Browser message to indicate that the worker is stopped.
 IPC_MESSAGE_CONTROL1(EmbeddedWorkerHostMsg_WorkerStopped,
                      int /* embedded_worker_id */)
 
+// Renderer -> Browser message to count an API use. |feature| must be one of the
+// values from blink::UseCounter::Feature enum.
+IPC_MESSAGE_CONTROL2(EmbeddedWorkerHostMsg_CountFeature,
+                     int64_t /* service_worker_version_id */,
+                     uint32_t /* feature */)
+
 // Renderer -> Browser message to report an exception.
 IPC_MESSAGE_CONTROL5(EmbeddedWorkerHostMsg_ReportException,
                      int /* embedded_worker_id */,
                      base::string16 /* error_message */,
                      int /* line_number */,
                      int /* column_number */,
                      GURL /* source_url */)
 
 // Renderer -> Browser message to report console message.
 IPC_MESSAGE_CONTROL2(
     EmbeddedWorkerHostMsg_ReportConsoleMessage,
     int /* embedded_worker_id */,
     EmbeddedWorkerHostMsg_ReportConsoleMessage_Params /* params */)
 
 // ---------------------------------------------------------------------------
 // For EmbeddedWorkerContext related messages, which are directly sent from
 // browser to the worker thread in the child process. We use a new message class
 // for this for easier cross-thread message dispatching.
 
 #undef IPC_MESSAGE_START
 #define IPC_MESSAGE_START EmbeddedWorkerContextMsgStart
 
 // Browser -> Renderer message to send message.
 IPC_MESSAGE_CONTROL3(EmbeddedWorkerContextMsg_MessageToWorker,
                      int /* thread_id */,
                      int /* embedded_worker_id */,
                      IPC::Message /* message */)