WebUsb Android chooser UI

This patch added code to display a chooser UI on Android for WebUsb.

BUG=591735

Review URL: https://codereview.chromium.org/1739523002

Cr-Commit-Position: refs/heads/master@{#383351}

2 files changed, 30 insertions, 1 deletions

diff --git a/device/usb/webusb_descriptors.cc b/device/usb/webusb_descriptors.cc
index de2309e..bdd23a7 100644
--- a/device/usb/webusb_descriptors.cc
+++ b/device/usb/webusb_descriptors.cc
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "device/usb/webusb_descriptors.h"
+
 #include <stddef.h>
 
 #include <iterator>
@@ -12,9 +14,9 @@
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/logging.h"
+#include "base/stl_util.h"
 #include "components/device_event_log/device_event_log.h"
 #include "device/usb/usb_device_handle.h"
-#include "device/usb/webusb_descriptors.h"
 #include "net/base/io_buffer.h"
 
 using net::IOBufferWithSize;
@@ -567,4 +569,26 @@ void ReadWebUsbDescriptors(scoped_refptr<UsbDeviceHandle> device_handle,
       base::Bind(&OnReadBosDescriptorHeader, device_handle, callback));
 }
 
+bool FindInWebUsbAllowedOrigins(
+    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;
+}
+
 }  // namespace device
diff --git a/device/usb/webusb_descriptors.h b/device/usb/webusb_descriptors.h
index 516adfc..a13440c 100644
--- a/device/usb/webusb_descriptors.h
+++ b/device/usb/webusb_descriptors.h
@@ -67,6 +67,11 @@ void ReadWebUsbDescriptors(
     const base::Callback<void(scoped_ptr<WebUsbAllowedOrigins> allowed_origins,
                               const GURL& landing_page)>& callback);
 
+// Check if the origin is allowed.
+bool FindInWebUsbAllowedOrigins(
+    const device::WebUsbAllowedOrigins* allowed_origins,
+    const GURL& origin);
+
 }  // device
 
 #endif  // DEVICE_USB_WEBUSB_DESCRIPTORS_H_