Reland of Implement basic USB device enumeration on Android. (patchset #1 id:1 of https://codereview.chromium.org/1561283003/ )

Reason for revert:
Lack of GYP dependency on //device/usb Java sources fixed.

Original issue's description:
> Revert of Implement basic USB device enumeration on Android. (patchset #3 id:40001 of https://codereview.chromium.org/1514603006/ )
>
> Reason for revert:
> Speculating that this is the cause of issue 575191.
>
> Original issue's description:
> > Implement basic USB device enumeration on Android.
> >
> > This patch provides a basic implementation of UsbService::GetDevices on
> > Android that populates UsbDevice objects by collecting properties of the
> > Java-side UsbDevice, UsbConfiguration, UsbInterface and UsbEndpoint
> > objects over JNI.
> >
> > It does not support opening devices and does not generate device add or
> > remove notifications.
> >
> > BUG=549257
> >
> > Committed: https://crrev.com/8a310851fb144e91d1777112930ac15c0d88577b
> > Cr-Commit-Position: refs/heads/master@{#367918}
>
> TBR=nasko@chromium.org,qinmin@chromium.org,yfriedman@chromium.org,pfeldman@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=549257,575191
>
> Committed: https://crrev.com/e3de6dea8003be39328bea275763daab36a8df24
> Cr-Commit-Position: refs/heads/master@{#368077}

TBR=nasko@chromium.org,qinmin@chromium.org,yfriedman@chromium.org,pfeldman@chromium.org
BUG=549257,575191

Review URL: https://codereview.chromium.org/1565313002

Cr-Commit-Position: refs/heads/master@{#368169}

1 files changed, 41 insertions, 0 deletions

diff --git a/device/usb/usb_endpoint_android.cc b/device/usb/usb_endpoint_android.cc
new file mode 100644
index 0000000..3280b04
--- /dev/null
+++ b/device/usb/usb_endpoint_android.cc
@@ -0,0 +1,41 @@
+// Copyright 2015 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 "device/usb/usb_endpoint_android.h"
+
+#include "jni/ChromeUsbEndpoint_jni.h"
+
+namespace device {
+
+// static
+bool UsbEndpointAndroid::RegisterJNI(JNIEnv* env) {
+  return RegisterNativesImpl(env);  // Generated in ChromeUsbEndpoint_jni.h
+}
+
+// static
+UsbEndpointDescriptor UsbEndpointAndroid::Convert(
+    JNIEnv* env,
+    const base::android::JavaRef<jobject>& usb_endpoint) {
+  base::android::ScopedJavaLocalRef<jobject> wrapper =
+      Java_ChromeUsbEndpoint_create(env, usb_endpoint.obj());
+
+  UsbEndpointDescriptor endpoint;
+  endpoint.address = Java_ChromeUsbEndpoint_getAddress(env, wrapper.obj());
+  endpoint.direction = static_cast<UsbEndpointDirection>(
+      Java_ChromeUsbEndpoint_getDirection(env, wrapper.obj()));
+  endpoint.maximum_packet_size =
+      Java_ChromeUsbEndpoint_getMaxPacketSize(env, wrapper.obj());
+  jint attributes = Java_ChromeUsbEndpoint_getAttributes(env, wrapper.obj());
+  endpoint.synchronization_type =
+      static_cast<UsbSynchronizationType>((attributes >> 2) & 3);
+  endpoint.usage_type = static_cast<UsbUsageType>((attributes >> 4) & 3);
+  endpoint.transfer_type = static_cast<UsbTransferType>(
+      Java_ChromeUsbEndpoint_getType(env, wrapper.obj()));
+  endpoint.polling_interval =
+      Java_ChromeUsbEndpoint_getInterval(env, wrapper.obj());
+
+  return endpoint;
+}
+
+}  // namespace device