[TimeZoneMonitor] Decouple renderer side impl from content to blink.

third_party/WebKit/Source/modules/time_zone_monitor/TimeZoneMonitorClient.cpp

Index: third_party/WebKit/Source/modules/time_zone_monitor/TimeZoneMonitorClient.cpp
diff --git a/third_party/WebKit/Source/modules/time_zone_monitor/TimeZoneMonitorClient.cpp b/third_party/WebKit/Source/modules/time_zone_monitor/TimeZoneMonitorClient.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..2f08b2a31fd8507dd6a9a080b96ebec9db541eb6
--- /dev/null
+++ b/third_party/WebKit/Source/modules/time_zone_monitor/TimeZoneMonitorClient.cpp
@@ -0,0 +1,57 @@
+// 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 "modules/time_zone_monitor/TimeZoneMonitorClient.h"
+
+#include "base/bind.h"
+#include "core/workers/WorkerBackingThread.h"
+#include "public/platform/InterfaceProvider.h"
+#include "public/platform/Platform.h"
+#include "third_party/icu/source/i18n/unicode/timezone.h"
+#include <v8.h>
+
+namespace {
+
+// Notify V8 that the date/time configuration of the system might have changed.
+void NotifyTimezoneChangeOnThisThread() {
+  v8::Isolate* isolate = v8::Isolate::GetCurrent();

[haraken, 2016/10/11 11:45:06]

v8::Isolate::GetCurrent() is deprecated and should be avoided. It's better to
pass in the isolate from WorkerGlobalScope or something.

[leonhsl(Using Gerrit), 2016/10/12 03:55:55]

Acknowledged and will investigate around how to do so.

+  if (!isolate)
+    return;
+  v8::Date::DateTimeConfigurationChangeNotification(isolate);
+}
+
+}  // namespace
+
+namespace blink {
+
+// static
+void TimeZoneMonitorClient::Init() {
+  static TimeZoneMonitorClient* instance = nullptr;
+  if (!instance)
+    instance = new TimeZoneMonitorClient();
+}
+
+TimeZoneMonitorClient::TimeZoneMonitorClient() : m_binding(this) {
+  device::mojom::blink::TimeZoneMonitorPtr monitor;
+  Platform::current()->interfaceProvider()->getInterface(
+      mojo::GetProxy(&monitor));
+  monitor->AddClient(m_binding.CreateInterfacePtrAndBind());
+}
+
+TimeZoneMonitorClient::~TimeZoneMonitorClient() {}
+
+void TimeZoneMonitorClient::OnTimeZoneChange(const WTF::String& tzInfo) {

[haraken, 2016/10/11 11:45:06]

timeZoneInfo

Blink prefers a fully qualified name.

[leonhsl(Using Gerrit), 2016/10/12 03:55:55]

Acknowledged.

+  if (!tzInfo.isEmpty()) {
+    icu::TimeZone* zone = icu::TimeZone::createTimeZone(
+        icu::UnicodeString::fromUTF8(tzInfo.utf8().data()));
+    icu::TimeZone::adoptDefault(zone);
+    VLOG(1) << "ICU default timezone is set to " << tzInfo;
+  }
+
+  NotifyTimezoneChangeOnThisThread();
+  WorkerBackingThread::PostTaskToAllThreads(
+      base::Bind(&NotifyTimezoneChangeOnThisThread));

[blundell, 2016/10/11 11:47:56]

What's the WTF equivalent of the base::Bind infrastructure?

[haraken, 2016/10/11 11:50:47]

WTF::bind.

[leonhsl(Using Gerrit), 2016/10/12 03:55:55]

Acknowledged.

+}
+
+}  // namespace blink