Remove mojo::Array.

extensions/browser/api/serial/serial_apitest.cc

Index: extensions/browser/api/serial/serial_apitest.cc
diff --git a/extensions/browser/api/serial/serial_apitest.cc b/extensions/browser/api/serial/serial_apitest.cc
index 0c85a4a894d40880a3e5a59332cfe6da41c9ae20..eef664516fa02a7d24d5ec01ae0da80a56a64c78 100644
--- a/extensions/browser/api/serial/serial_apitest.cc
+++ b/extensions/browser/api/serial/serial_apitest.cc
@@ -48,8 +48,8 @@ class FakeSerialDeviceEnumerator : public device::SerialDeviceEnumerator {
  public:
   ~FakeSerialDeviceEnumerator() override {}
 
-  mojo::Array<device::serial::DeviceInfoPtr> GetDevices() override {
-    mojo::Array<device::serial::DeviceInfoPtr> devices;
+  std::vector<device::serial::DeviceInfoPtr> GetDevices() override {
+    std::vector<device::serial::DeviceInfoPtr> devices;
     device::serial::DeviceInfoPtr device0(device::serial::DeviceInfo::New());
     device0->path = "/dev/fakeserialmojo";
     device::serial::DeviceInfoPtr device1(device::serial::DeviceInfo::New());