Ash Tray: Add MAC address of cellular device to network device info bubble.

BUG=1012052

Change-Id: I8cbfbf4bd5808fececc3c331c5a0cd32a9e84e52
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1846026
Commit-Queue: Tim Song <tengs@chromium.org>
Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Cr-Commit-Position: refs/heads/master@{#704419}

ash/ash_strings.grd

@@ -1291,6 +1291,9 @@ This file contains the strings for ash.
       <message name="IDS_ASH_STATUS_TRAY_ETHERNET_ADDRESS" desc="The label for the mac address of the ethernet device.">
         Ethernet: <ph name="ADDRESS">$1<ex>01:23:45:67:89:AB</ex></ph>
       </message>
+      <message name="IDS_ASH_STATUS_TRAY_CELLULAR_ADDRESS" desc="The label for the mac address of the cellular device.">
+        Cellular: <ph name="ADDRESS">$1<ex>01:23:45:67:89:AB</ex></ph>
+      </message>
       <message name="IDS_ASH_STATUS_TRAY_INITIALIZING_CELLULAR" desc="Message for the status area when initializing the cellular device.">
         Initializing...
       </message>

ash/system/network/network_state_list_detailed_view.cc

@@ -398,7 +398,7 @@ views::View* NetworkStateListDetailedView::CreateNetworkInfoView() {
       ipv6_address = device->ipv6_address->ToString();
   }
 
-  std::string ethernet_address, wifi_address;
+  std::string ethernet_address, wifi_address, cellular_address;
   if (list_type_ == LIST_TYPE_NETWORK) {
     const DeviceStateProperties* ethernet =
         model_->GetDevice(NetworkType::kEthernet);
@@ -407,23 +407,29 @@ views::View* NetworkStateListDetailedView::CreateNetworkInfoView() {
     const DeviceStateProperties* wifi = model_->GetDevice(NetworkType::kWiFi);
     if (wifi && wifi->mac_address)
       wifi_address = *wifi->mac_address;
+    const DeviceStateProperties* cellular =
+        model_->GetDevice(NetworkType::kCellular);
+    if (cellular && cellular->mac_address)
+      cellular_address = *cellular->mac_address;
   }
 
   base::string16 bubble_text;
-  auto add_line = [&bubble_text](const std::string& address, int ids) {
-    if (!address.empty()) {
+  auto maybe_add_mac_address = [&bubble_text](const std::string& address,
+                                              int ids) {
+    if (address.empty())
+      return;
+
     if (!bubble_text.empty())
       bubble_text += base::ASCIIToUTF16("\n");
 
-      bubble_text +=
-          l10n_util::GetStringFUTF16(ids, base::UTF8ToUTF16(address));
-    }
+    bubble_text += l10n_util::GetStringFUTF16(ids, base::UTF8ToUTF16(address));
   };
 
-  add_line(ipv4_address, IDS_ASH_STATUS_TRAY_IP_ADDRESS);
-  add_line(ipv6_address, IDS_ASH_STATUS_TRAY_IPV6_ADDRESS);
-  add_line(ethernet_address, IDS_ASH_STATUS_TRAY_ETHERNET_ADDRESS);
-  add_line(wifi_address, IDS_ASH_STATUS_TRAY_WIFI_ADDRESS);
+  maybe_add_mac_address(ipv4_address, IDS_ASH_STATUS_TRAY_IP_ADDRESS);
+  maybe_add_mac_address(ipv6_address, IDS_ASH_STATUS_TRAY_IPV6_ADDRESS);
+  maybe_add_mac_address(ethernet_address, IDS_ASH_STATUS_TRAY_ETHERNET_ADDRESS);
+  maybe_add_mac_address(wifi_address, IDS_ASH_STATUS_TRAY_WIFI_ADDRESS);
+  maybe_add_mac_address(cellular_address, IDS_ASH_STATUS_TRAY_CELLULAR_ADDRESS);
 
   // Avoid an empty bubble in the unlikely event that there is no network
   // information at all.