Move UsbService to its own component.

components/usb_service/usb_device_handle.h

Index: components/usb_service/usb_device_handle.h
diff --git a/chrome/browser/usb/usb_device_handle.h b/components/usb_service/usb_device_handle.h
similarity index 88%
rename from chrome/browser/usb/usb_device_handle.h
rename to components/usb_service/usb_device_handle.h
index 09cd101d2b71d3c4241a7fca9dc9c3b318118118..2934721bf65ffa459c665ba5428c4482a4fab456 100644
--- a/chrome/browser/usb/usb_device_handle.h
+++ b/components/usb_service/usb_device_handle.h
@@ -2,40 +2,37 @@
 // 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_
+#ifndef COMPONENTS_USB_SERVICE_USB_DEVICE_HANDLE_H_
+#define COMPONENTS_USB_SERVICE_USB_DEVICE_HANDLE_H_
 
 #include <map>
 #include <vector>
 
+#include "base/callback.h"
 #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 "components/usb_service/usb_interface.h"
+#include "components/usb_service/usb_service_export.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;
+namespace base {
+class MessageLoopProxy;
+}
+
+namespace usb_service {
 
 class UsbContext;
 class UsbConfigDescriptor;
 class UsbDevice;
-class UsbInterfaceDescriptor;
 
-namespace base {
-  class MessageLoopProxy;
-}  // namespace base
-
-namespace net {
-class IOBuffer;
-}  // namespace net
+typedef libusb_device_handle* PlatformUsbDeviceHandle;
+typedef libusb_iso_packet_descriptor* PlatformUsbIsoPacketDescriptor;
+typedef libusb_transfer* PlatformUsbTransferHandle;
 
 enum UsbTransferStatus {
   USB_TRANSFER_COMPLETED = 0,
@@ -48,11 +45,13 @@ enum UsbTransferStatus {
   USB_TRANSFER_LENGTH_SHORT,
 };
 
-typedef base::Callback<void(UsbTransferStatus, scoped_refptr<net::IOBuffer>,
-    size_t)> UsbTransferCallback;
+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> {
+class USB_SERVICE_EXPORT UsbDeviceHandle
+    : public base::RefCountedThreadSafe<UsbDeviceHandle> {
  public:
   enum TransferRequestType { STANDARD, CLASS, VENDOR, RESERVED };
   enum TransferRecipient { DEVICE, INTERFACE, ENDPOINT, OTHER };
@@ -71,9 +70,8 @@ class UsbDeviceHandle : public base::RefCountedThreadSafe<UsbDeviceHandle> {
   // 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 SetInterfaceAlternateSetting(const int interface_number,
+                                            const int alternate_setting);
   virtual bool ResetDevice();
   virtual bool GetSerial(base::string16* serial);
 
@@ -118,7 +116,8 @@ class UsbDeviceHandle : public base::RefCountedThreadSafe<UsbDeviceHandle> {
 
   // This constructor is called by UsbDevice.
   UsbDeviceHandle(scoped_refptr<UsbContext> context,
-                  UsbDevice* device, PlatformUsbDeviceHandle handle,
+                  UsbDevice* device,
+                  PlatformUsbDeviceHandle handle,
                   scoped_refptr<UsbConfigDescriptor> interfaces);
 
   // This constructor variant is for use in testing only.
@@ -182,4 +181,6 @@ class UsbDeviceHandle : public base::RefCountedThreadSafe<UsbDeviceHandle> {
   DISALLOW_COPY_AND_ASSIGN(UsbDeviceHandle);
 };
 
-#endif  // CHROME_BROWSER_USB_USB_DEVICE_HANDLE_H_
+}  // namespace usb_service
+
+#endif  // COMPONENTS_USB_SERVICE_USB_DEVICE_HANDLE_H_