Reland of Update device/usb and its Mojo interface for variable size ISO packets.

device/usb/usb_device_handle_impl.h

Index: device/usb/usb_device_handle_impl.h
diff --git a/device/usb/usb_device_handle_impl.h b/device/usb/usb_device_handle_impl.h
index 7d10e42b3f8de3db808157bb883fa7fe396728bf..ce2daffcb7cf62a792db625d725234d109e08fec 100644
--- a/device/usb/usb_device_handle_impl.h
+++ b/device/usb/usb_device_handle_impl.h
@@ -71,14 +71,18 @@ class UsbDeviceHandleImpl : public UsbDeviceHandle {
                        unsigned int timeout,
                        const TransferCallback& callback) override;
 
-  void IsochronousTransfer(UsbEndpointDirection direction,
-                           uint8_t endpoint_number,
-                           scoped_refptr<net::IOBuffer> buffer,
-                           size_t length,
-                           unsigned int packets,
-                           unsigned int packet_length,
-                           unsigned int timeout,
-                           const TransferCallback& callback) override;
+  void IsochronousTransferIn(
+      uint8_t endpoint,
+      const std::vector<uint32_t>& packet_lengths,
+      unsigned int timeout,
+      const IsochronousTransferCallback& callback) override;
+
+  void IsochronousTransferOut(
+      uint8_t endpoint,
+      scoped_refptr<net::IOBuffer> buffer,
+      const std::vector<uint32_t>& packet_lengths,
+      unsigned int timeout,
+      const IsochronousTransferCallback& callback) override;
 
   void GenericTransfer(UsbEndpointDirection direction,
                        uint8_t endpoint_number,
@@ -149,15 +153,20 @@ class UsbDeviceHandleImpl : public UsbDeviceHandle {
       scoped_refptr<base::TaskRunner> callback_task_runner,
       const TransferCallback& callback);
 
-  void IsochronousTransferInternal(
+  void IsochronousTransferInInternal(
+      uint8_t endpoint_address,
+      const std::vector<uint32_t>& packet_lengths,
+      unsigned int timeout,
+      scoped_refptr<base::TaskRunner> callback_task_runner,
+      const IsochronousTransferCallback& callback);
+
+  void IsochronousTransferOutInternal(
       uint8_t endpoint_address,
       scoped_refptr<net::IOBuffer> buffer,
-      size_t length,
-      unsigned int packets,
-      unsigned int packet_length,
+      const std::vector<uint32_t>& packet_lengths,
       unsigned int timeout,
       scoped_refptr<base::TaskRunner> callback_task_runner,
-      const TransferCallback& callback);
+      const IsochronousTransferCallback& callback);
 
   void GenericTransferInternal(
       uint8_t endpoint_address,