Mojoify time zone update IPC from browser to renderer

content/browser/time_zone_monitor.h

Index: content/browser/time_zone_monitor.h
diff --git a/content/browser/time_zone_monitor.h b/content/browser/time_zone_monitor.h
index 95f70a39317cda74739e85d439a1c5a207f97192..8b0e71d1144c0d43f3bac1fac3a38819910c584c 100644
--- a/content/browser/time_zone_monitor.h
+++ b/content/browser/time_zone_monitor.h
@@ -8,6 +8,8 @@
 #include <memory>
 
 #include "base/macros.h"
+#include "device/time/public/interfaces/time_zone_monitor.mojom.h"
+#include "mojo/public/cpp/bindings/binding_set.h"
 
 namespace content {
 
@@ -28,22 +30,32 @@ namespace content {
 //    localtime in renderer processes with custom code that calls
 //    localtime in the browser process via Chrome IPC.
 
-class TimeZoneMonitor {
+// TODO(blundell): Update this class to be named TimeZoneMonitorImpl.

[jam, 2016/09/06 22:11:18]

nit: btw no need to do that. the reason interfaces are in the "mojom"
subnamespace is that the impls don't need to end in Impl (that's the reason
given for that mojom intermediate namespace)

[blundell, 2016/09/07 14:40:05]

Ah convenient.

+class TimeZoneMonitor : public device::mojom::TimeZoneMonitor {
  public:
   // Returns a new TimeZoneMonitor object (likely a subclass) specific to the
   // platform.
   static std::unique_ptr<TimeZoneMonitor> Create();
 
-  virtual ~TimeZoneMonitor();
+  ~TimeZoneMonitor() override;
+
+  void Bind(device::mojom::TimeZoneMonitorRequest request);
 
  protected:
   TimeZoneMonitor();
 
-  // Loop over all renderers and notify them that the system time zone may
-  // have changed.
-  void NotifyRenderers();
+  // Notify all callbacks that the system time zone may have changed.
+  void NotifyClients();
 
  private:
+  // device::mojom::device::mojom::TimeZoneMonitor:
+  void QueryNextTimeZoneChange(
+      const device::mojom::TimeZoneMonitor::QueryNextTimeZoneChangeCallback&
+          callback) override;
+
+  mojo::BindingSet<device::mojom::TimeZoneMonitor> bindings_;
+  std::vector<device::mojom::TimeZoneMonitor::QueryNextTimeZoneChangeCallback>
+      on_time_zone_change_tasks_;
   DISALLOW_COPY_AND_ASSIGN(TimeZoneMonitor);
 };