Add a service to track devices selected by the user.

device/usb/usb_device_handle_impl.h

 // Copyright 2014 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 DEVICE_USB_USB_DEVICE_HANDLE_IMPL_H_
 #define DEVICE_USB_USB_DEVICE_HANDLE_IMPL_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 17 matching lines @@
 
 typedef libusb_device_handle* PlatformUsbDeviceHandle;
 typedef libusb_iso_packet_descriptor* PlatformUsbIsoPacketDescriptor;
 typedef libusb_transfer* PlatformUsbTransferHandle;
 
 // UsbDeviceHandle class provides basic I/O related functionalities.
 class UsbDeviceHandleImpl : public UsbDeviceHandle {
  public:
   virtual scoped_refptr<UsbDevice> GetDevice() const OVERRIDE;
   virtual void Close() OVERRIDE;
-  virtual bool ClaimInterface(const int interface_number) OVERRIDE;
-  virtual bool ReleaseInterface(const int interface_number) OVERRIDE;
-  virtual bool SetInterfaceAlternateSetting(
-      const int interface_number,
-      const int alternate_setting) OVERRIDE;
+  virtual bool ClaimInterface(int interface_number) OVERRIDE;
+  virtual bool ReleaseInterface(int interface_number) OVERRIDE;
+  virtual bool SetInterfaceAlternateSetting(int interface_number,
+                                            int alternate_setting) OVERRIDE;
   virtual bool ResetDevice() OVERRIDE;
   virtual bool GetManufacturer(base::string16* manufacturer) OVERRIDE;
   virtual bool GetProduct(base::string16* product) OVERRIDE;
   virtual bool GetSerial(base::string16* serial) OVERRIDE;
-  virtual void ControlTransfer(const UsbEndpointDirection direction,
-                               const TransferRequestType request_type,
-                               const TransferRecipient recipient,
-                               const uint8 request,
-                               const uint16 value,
-                               const uint16 index,
+  virtual void ControlTransfer(UsbEndpointDirection direction,
+                               TransferRequestType request_type,
+                               TransferRecipient recipient,
+                               uint8 request,
+                               uint16 value,
+                               uint16 index,
                                net::IOBuffer* buffer,
-                               const size_t length,
-                               const unsigned int timeout,
+                               size_t length,
+                               unsigned int timeout,
                                const UsbTransferCallback& callback) OVERRIDE;
 
-  virtual void BulkTransfer(const UsbEndpointDirection direction,
-                            const uint8 endpoint,
+  virtual void BulkTransfer(UsbEndpointDirection direction,
+                            uint8 endpoint,
                             net::IOBuffer* buffer,
-                            const size_t length,
-                            const unsigned int timeout,
+                            size_t length,
+                            unsigned int timeout,
                             const UsbTransferCallback& callback) OVERRIDE;
 
-  virtual void InterruptTransfer(const UsbEndpointDirection direction,
-                                 const uint8 endpoint,
+  virtual void InterruptTransfer(UsbEndpointDirection direction,
+                                 uint8 endpoint,
                                  net::IOBuffer* buffer,
-                                 const size_t length,
-                                 const unsigned int timeout,
+                                 size_t length,
+                                 unsigned int timeout,
                                  const UsbTransferCallback& callback) OVERRIDE;
 
   virtual void IsochronousTransfer(
-      const UsbEndpointDirection direction,
-      const uint8 endpoint,
+      UsbEndpointDirection direction,
+      uint8 endpoint,
       net::IOBuffer* buffer,
-      const size_t length,
-      const unsigned int packets,
-      const unsigned int packet_length,
-      const unsigned int timeout,
+      size_t length,
+      unsigned int packets,
+      unsigned int packet_length,
+      unsigned int timeout,
       const UsbTransferCallback& callback) OVERRIDE;
 
   PlatformUsbDeviceHandle handle() const { return handle_; }
 
  protected:
   friend class UsbDeviceImpl;
 
   // This constructor is called by UsbDevice.
   UsbDeviceHandleImpl(scoped_refptr<UsbContext> context,
                       UsbDeviceImpl* device,
@@ skipping 74 matching lines @@
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(UsbDeviceHandleImpl);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_USB_USB_DEVICE_HANDLE_IMPL_H_