Move UsbService to its own component.

chrome/browser/usb/usb_device_handle.h

Index: chrome/browser/usb/usb_device_handle.h
diff --git a/chrome/browser/usb/usb_device_handle.h b/chrome/browser/usb/usb_device_handle.h
deleted file mode 100644
index 09cd101d2b71d3c4241a7fca9dc9c3b318118118..0000000000000000000000000000000000000000
--- a/chrome/browser/usb/usb_device_handle.h
+++ /dev/null
@@ -1,185 +0,0 @@
-// Copyright (c) 2013 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.
-
-#ifndef CHROME_BROWSER_USB_USB_DEVICE_HANDLE_H_
-#define CHROME_BROWSER_USB_USB_DEVICE_HANDLE_H_
-
-#include <map>
-#include <vector>
-
-#include "base/memory/ref_counted.h"
-#include "base/strings/string16.h"
-#include "base/synchronization/lock.h"
-#include "base/threading/thread_checker.h"
-#include "chrome/browser/usb/usb_interface.h"
-#include "net/base/completion_callback.h"
-#include "net/base/io_buffer.h"
-
-struct libusb_device_handle;
-struct libusb_iso_packet_descriptor;
-struct libusb_transfer;
-
-typedef libusb_device_handle* PlatformUsbDeviceHandle;
-typedef libusb_iso_packet_descriptor* PlatformUsbIsoPacketDescriptor;
-typedef libusb_transfer* PlatformUsbTransferHandle;
-
-class UsbContext;
-class UsbConfigDescriptor;
-class UsbDevice;
-class UsbInterfaceDescriptor;
-
-namespace base {
-  class MessageLoopProxy;
-}  // namespace base
-
-namespace net {
-class IOBuffer;
-}  // namespace net
-
-enum UsbTransferStatus {
-  USB_TRANSFER_COMPLETED = 0,
-  USB_TRANSFER_ERROR,
-  USB_TRANSFER_TIMEOUT,
-  USB_TRANSFER_CANCELLED,
-  USB_TRANSFER_STALLED,
-  USB_TRANSFER_DISCONNECT,
-  USB_TRANSFER_OVERFLOW,
-  USB_TRANSFER_LENGTH_SHORT,
-};
-
-typedef base::Callback<void(UsbTransferStatus, scoped_refptr<net::IOBuffer>,
-    size_t)> UsbTransferCallback;
-
-// UsbDeviceHandle class provides basic I/O related functionalities.
-class UsbDeviceHandle : public base::RefCountedThreadSafe<UsbDeviceHandle> {
- public:
-  enum TransferRequestType { STANDARD, CLASS, VENDOR, RESERVED };
-  enum TransferRecipient { DEVICE, INTERFACE, ENDPOINT, OTHER };
-
-  scoped_refptr<UsbDevice> device() const;
-  PlatformUsbDeviceHandle handle() const { return handle_; }
-
-  // Notifies UsbDevice to drop the reference of this object; cancels all the
-  // flying transfers.
-  // It is possible that the object has no other reference after this call. So
-  // if it is called using a raw pointer, it could be invalidated.
-  // The platform device handle will be closed when UsbDeviceHandle destructs.
-  virtual void Close();
-
-  // Device manipulation operations. These methods are blocking and must be
-  // called on FILE thread.
-  virtual bool ClaimInterface(const int interface_number);
-  virtual bool ReleaseInterface(const int interface_number);
-  virtual bool SetInterfaceAlternateSetting(
-      const int interface_number,
-      const int alternate_setting);
-  virtual bool ResetDevice();
-  virtual bool GetSerial(base::string16* serial);
-
-  // Async IO. Can be called on any thread.
-  virtual void ControlTransfer(const UsbEndpointDirection direction,
-                               const TransferRequestType request_type,
-                               const TransferRecipient recipient,
-                               const uint8 request,
-                               const uint16 value,
-                               const uint16 index,
-                               net::IOBuffer* buffer,
-                               const size_t length,
-                               const unsigned int timeout,
-                               const UsbTransferCallback& callback);
-
-  virtual void BulkTransfer(const UsbEndpointDirection direction,
-                            const uint8 endpoint,
-                            net::IOBuffer* buffer,
-                            const size_t length,
-                            const unsigned int timeout,
-                            const UsbTransferCallback& callback);
-
-  virtual void InterruptTransfer(const UsbEndpointDirection direction,
-                                 const uint8 endpoint,
-                                 net::IOBuffer* buffer,
-                                 const size_t length,
-                                 const unsigned int timeout,
-                                 const UsbTransferCallback& callback);
-
-  virtual void IsochronousTransfer(const UsbEndpointDirection direction,
-                                   const uint8 endpoint,
-                                   net::IOBuffer* buffer,
-                                   const size_t length,
-                                   const unsigned int packets,
-                                   const unsigned int packet_length,
-                                   const unsigned int timeout,
-                                   const UsbTransferCallback& callback);
-
- protected:
-  friend class base::RefCountedThreadSafe<UsbDeviceHandle>;
-  friend class UsbDevice;
-
-  // This constructor is called by UsbDevice.
-  UsbDeviceHandle(scoped_refptr<UsbContext> context,
-                  UsbDevice* device, PlatformUsbDeviceHandle handle,
-                  scoped_refptr<UsbConfigDescriptor> interfaces);
-
-  // This constructor variant is for use in testing only.
-  UsbDeviceHandle();
-  virtual ~UsbDeviceHandle();
-
-  UsbDevice* device_;
-
- private:
-  friend void HandleTransferCompletion(PlatformUsbTransferHandle handle);
-
-  class InterfaceClaimer;
-  struct Transfer;
-
-  // Refresh endpoint_map_ after ClaimInterface, ReleaseInterface and
-  // SetInterfaceAlternateSetting.
-  void RefreshEndpointMap();
-
-  // Look up the claimed interface by endpoint. Return NULL if the interface
-  // of the endpoint is not found.
-  scoped_refptr<InterfaceClaimer> GetClaimedInterfaceForEndpoint(
-      unsigned char endpoint);
-
-  // Submits a transfer and starts tracking it. Retains the buffer and copies
-  // the completion callback until the transfer finishes, whereupon it invokes
-  // the callback then releases the buffer.
-  void SubmitTransfer(PlatformUsbTransferHandle handle,
-                      UsbTransferType transfer_type,
-                      net::IOBuffer* buffer,
-                      const size_t length,
-                      scoped_refptr<base::MessageLoopProxy> message_loop_proxy,
-                      const UsbTransferCallback& callback);
-
-  // Invokes the callbacks associated with a given transfer, and removes it from
-  // the in-flight transfer set.
-  void TransferComplete(PlatformUsbTransferHandle transfer);
-
-  // Informs the object to drop internal references.
-  void InternalClose();
-
-  PlatformUsbDeviceHandle handle_;
-
-  scoped_refptr<UsbConfigDescriptor> interfaces_;
-
-  typedef std::map<int, scoped_refptr<InterfaceClaimer> > ClaimedInterfaceMap;
-  ClaimedInterfaceMap claimed_interfaces_;
-
-  typedef std::map<PlatformUsbTransferHandle, Transfer> TransferMap;
-  TransferMap transfers_;
-
-  // A map from endpoints to interfaces
-  typedef std::map<int, int> EndpointMap;
-  EndpointMap endpoint_map_;
-
-  // Retain the UsbContext so that the platform context will not be destroyed
-  // before this handle.
-  scoped_refptr<UsbContext> context_;
-
-  base::ThreadChecker thread_checker_;
-
-  DISALLOW_COPY_AND_ASSIGN(UsbDeviceHandle);
-};
-
-#endif  // CHROME_BROWSER_USB_USB_DEVICE_HANDLE_H_