WebUsb Android chooser UI

chrome/browser/usb/usb_common.cc

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/usb/usb_common.h"
+
+#include "base/metrics/histogram_macros.h"
+#include "base/stl_util.h"
+#include "device/usb/webusb_descriptors.h"
+#include "url/gurl.h"
+
+void RecordChooserClosure(WebUsbChooserClosed disposition) {
+  UMA_HISTOGRAM_ENUMERATION("WebUsb.ChooserClosed", disposition,
+                            WEBUSB_CHOOSER_CLOSED_MAX);
+}
+
+// Check if the origin is allowed.
+bool FindInAllowedOrigins(const device::WebUsbAllowedOrigins* allowed_origins,
+                          const GURL& origin) {
+  if (!allowed_origins)
+    return false;
+
+  if (ContainsValue(allowed_origins->origins, origin))
+    return true;
+
+  for (const auto& config : allowed_origins->configurations) {
+    if (ContainsValue(config.origins, origin))
+      return true;
+
+    for (const auto& function : config.functions) {
+      if (ContainsValue(function.origins, origin))
+        return true;
+    }
+  }
+
+  return false;
+}