Update mojo sdk to rev 7214b7ec7d27563b2666afad86cf1c5895c56c18

third_party/mojo/src/mojo/public/tools/BUILD.gn

Index: third_party/mojo/src/mojo/public/tools/BUILD.gn
diff --git a/third_party/mojo/src/mojo/public/tools/BUILD.gn b/third_party/mojo/src/mojo/public/tools/BUILD.gn
index e03d1d311696c4b6c5205129bd940286a51137c1..b5cfcd49f6f1a1ff5d59af6c43586ca7f259c4f9 100644
--- a/third_party/mojo/src/mojo/public/tools/BUILD.gn
+++ b/third_party/mojo/src/mojo/public/tools/BUILD.gn
@@ -31,16 +31,26 @@ if (use_prebuilt_mojo_shell) {
 if (use_prebuilt_network_service) {
   copy("copy_network_service") {
     filename = "network_service.mojo"
-    if (is_android) {
+    if (defined(prebuilt_network_service_location) &&
+        prebuilt_network_service_location != "") {
       sources = [
-        "prebuilt/network_service/android-arm/$filename",
+        "$prebuilt_network_service_location",
       ]
     } else {
-      assert(is_linux)
-      sources = [
-        "prebuilt/network_service/linux-x64/$filename",
-      ]
+      if (is_android) {
+        assert(cpu_arch == "arm",
+               "Only arm version prebuilt netowrk_service.mojo is available.")
+        sources = [
+          "prebuilt/network_service/android-arm/$filename",
+        ]
+      } else {
+        assert(is_linux)
+        sources = [
+          "prebuilt/network_service/linux-x64/$filename",
+        ]
+      }
     }
+
     outputs = [
       "$root_out_dir/$filename",
     ]
@@ -63,3 +73,18 @@ if (use_prebuilt_network_service) {
     ]
   }
 }
+
+# This rule can be seen as a sort of adapter. This takes a dart framework
+# loaded from Google Storage and then puts it in a rule which the
+# "dart_package" template in mojo/public/dart/rules.gni can introspect on,
+# accessing the 'label' and 'target_out_dir' variables.
+if (use_dart_apptest_framework) {
+  copy("dart_apptest_framework") {
+    sources = [
+      "prebuilt/frameworks/apptest.dartzip",
+    ]
+    outputs = [
+      "$target_out_dir/dart_apptest_framework.dartzip",
+    ]
+  }
+}