Reland of Implement basic USB device enumeration on Android.

chrome/browser/devtools/device/usb/android_usb_browsertest.cc

Index: chrome/browser/devtools/device/usb/android_usb_browsertest.cc
diff --git a/chrome/browser/devtools/device/usb/android_usb_browsertest.cc b/chrome/browser/devtools/device/usb/android_usb_browsertest.cc
index d7fbbf93c11f79847bb4429120c7c6808a6f278c..91307a845f808c8c106a2e9533f722418cf67898 100644
--- a/chrome/browser/devtools/device/usb/android_usb_browsertest.cc
+++ b/chrome/browser/devtools/device/usb/android_usb_browsertest.cc
@@ -427,10 +427,6 @@ class MockUsbDevice : public UsbDevice {
     return T::kConfigured ? &config_desc_ : nullptr;
   }
 
-  bool Close(scoped_refptr<UsbDeviceHandle> handle) override {
-    return true;
-  }
-
   std::set<int> claimed_interfaces_;
 
  protected: