Change PepperNetworkMonitorHost to use NetworkChangeObserver

NetworkChangeNotifier::IPAddressObserver is being deprecated.
This CL migrates PepperNetworkMonitorHost to use NetworkChangeObserver
instead of the deprecated IPAddressObserver.

For more information, please see linked design doc in the bug below.

Bug: 754695
Signed-off-by: Yuhong Sha <yuhong.sha@samsung.com>
Change-Id: I2b6e96a1b3a1fcc14edb096401041c28b3052ab1
Reviewed-on: https://chromium-review.googlesource.com/945186Reviewed-by: Helen Li <xunjieli@chromium.org>
Reviewed-by: Raymes Khoury <raymes@chromium.org>
Commit-Queue: Helen Li <xunjieli@chromium.org>
Cr-Commit-Position: refs/heads/master@{#544675}

content/browser/renderer_host/pepper/pepper_network_monitor_host.cc

@@ -64,10 +64,14 @@ PepperNetworkMonitorHost::PepperNetworkMonitorHost(BrowserPpapiHostImpl* host,
 }
 
 PepperNetworkMonitorHost::~PepperNetworkMonitorHost() {
-  net::NetworkChangeNotifier::RemoveIPAddressObserver(this);
+  net::NetworkChangeNotifier::RemoveNetworkChangeObserver(this);
 }
 
-void PepperNetworkMonitorHost::OnIPAddressChanged() { GetAndSendNetworkList(); }
+void PepperNetworkMonitorHost::OnNetworkChanged(
+    net::NetworkChangeNotifier::ConnectionType type) {
+  if (type == net::NetworkChangeNotifier::GetConnectionType())
+    GetAndSendNetworkList();
+}
 
 void PepperNetworkMonitorHost::OnPermissionCheckResult(
     bool can_use_network_monitor) {
@@ -77,7 +81,7 @@ void PepperNetworkMonitorHost::OnPermissionCheckResult(
     return;
   }
 
-  net::NetworkChangeNotifier::AddIPAddressObserver(this);
+  net::NetworkChangeNotifier::AddNetworkChangeObserver(this);
   GetAndSendNetworkList();
 }
 

content/browser/renderer_host/pepper/pepper_network_monitor_host.h

@@ -21,7 +21,7 @@ class BrowserPpapiHostImpl;
 // The host for PPB_NetworkMonitor. This class lives on the IO thread.
 class CONTENT_EXPORT PepperNetworkMonitorHost
     : public ppapi::host::ResourceHost,
-      public net::NetworkChangeNotifier::IPAddressObserver {
+      public net::NetworkChangeNotifier::NetworkChangeObserver {
  public:
   PepperNetworkMonitorHost(BrowserPpapiHostImpl* host,
                            PP_Instance instance,
@@ -29,8 +29,9 @@ class CONTENT_EXPORT PepperNetworkMonitorHost
 
   ~PepperNetworkMonitorHost() override;
 
-  // net::NetworkChangeNotifier::IPAddressObserver interface.
-  void OnIPAddressChanged() override;
+  // net::NetworkChangeNotifier::NetworkChangeObserver interface.
+  void OnNetworkChanged(
+      net::NetworkChangeNotifier::ConnectionType type) override;
 
  private:
   void OnPermissionCheckResult(bool can_use_network_monitor);