Add support for isochronous transfers in WebUSB.

third_party/WebKit/public/platform/modules/webusb/WebUSBDevice.h

 // 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.
 
 #ifndef WebUSBDevice_h
 #define WebUSBDevice_h
 
 #include "public/platform/WebCallbacks.h"
 #include "public/platform/WebPassOwnPtr.h"
 #include "public/platform/WebVector.h"
 
 namespace blink {
 
 struct WebUSBDeviceInfo;
 struct WebUSBError;
 struct WebUSBTransferInfo;
 
 using WebUSBDeviceOpenCallbacks = WebCallbacks<void, const WebUSBError&>;
 using WebUSBDeviceCloseCallbacks = WebCallbacks<void, const WebUSBError&>;
 using WebUSBDeviceGetConfigurationCallbacks = WebCallbacks<uint8_t, const WebUSBError&>;
 using WebUSBDeviceSetConfigurationCallbacks = WebCallbacks<void, const WebUSBError&>;
 using WebUSBDeviceClaimInterfaceCallbacks = WebCallbacks<void, const WebUSBError&>;
 using WebUSBDeviceReleaseInterfaceCallbacks = WebCallbacks<void, const WebUSBError&>;
 using WebUSBDeviceResetCallbacks = WebCallbacks<void, const WebUSBError&>;
 using WebUSBDeviceSetInterfaceAlternateSettingCallbacks = WebCallbacks<void, const WebUSBError&>;
 using WebUSBDeviceClearHaltCallbacks = WebCallbacks<void, const WebUSBError&>;
 using WebUSBDeviceTransferCallbacks = WebCallbacks<WebPassOwnPtr<WebUSBTransferInfo>, const WebUSBError&>;
 
-// TODO(rockot): Eliminate these aliases once they're no longer used outside of
-// Blink code.
-using WebUSBDeviceControlTransferCallbacks = WebUSBDeviceTransferCallbacks;
-using WebUSBDeviceBulkTransferCallbacks = WebUSBDeviceTransferCallbacks;
-using WebUSBDeviceInterruptTransferCallbacks = WebUSBDeviceTransferCallbacks;
-
 class WebUSBDevice {
 public:
     enum class TransferDirection {
         In,
         Out,
     };
 
     enum class RequestType {
         Standard,
         Class,
@@ skipping 46 matching lines @@
 
     // Sets the alternate setting of an interface.
     // Ownership of the WebUSBDeviceSetInterfaceAlternateSettingCallbacks is transferred to the client.
     virtual void setInterface(uint8_t interfaceNumber, uint8_t alternateSetting, WebUSBDeviceSetInterfaceAlternateSettingCallbacks*) = 0;
 
     // Clears the halt condition on a specific endpoint.
     // Ownership of the WebUSBDeviceClearHaltCallbacks is transferred to the client.
     virtual void clearHalt(uint8_t endpointNumber, WebUSBDeviceClearHaltCallbacks*) = 0;
 
     // Initiates a control transfer.
-    // Ownership of the WebUSBDeviceControlTransferCallbacks is transferred to the client.
-    virtual void controlTransfer(const ControlTransferParameters&, uint8_t* data, size_t dataSize, unsigned timeout, WebUSBDeviceControlTransferCallbacks*) = 0;
+    // Ownership of the WebUSBDeviceTransferCallbacks is transferred to the client.
+    virtual void controlTransfer(const ControlTransferParameters&, uint8_t* data, size_t dataSize, unsigned timeout, WebUSBDeviceTransferCallbacks*) = 0;
 
     // Initiates a bulk or interrupt transfer.
-    // Ownership of the WebUSBDeviceBulkTransferCallbacks is transferred to the client.
-    virtual void transfer(TransferDirection, uint8_t endpointNumber, uint8_t* data, size_t dataSize, unsigned timeout, WebUSBDeviceBulkTransferCallbacks*) = 0;
+    // Ownership of the WebUSBDeviceTransferCallbacks is transferred to the client.
+    virtual void transfer(TransferDirection, uint8_t endpointNumber, uint8_t* data, size_t dataSize, unsigned timeout, WebUSBDeviceTransferCallbacks*) = 0;
+
+    // Initiates an isochronous transfer.
+    // Ownership of the WebUSBDeviceTransferCallbacks is transferred to the client.
+    virtual void isochronousTransfer(TransferDirection, uint8_t endpointNumber, uint8_t* data, size_t dataSize, WebVector<unsigned> packetLengths, unsigned timeout, WebUSBDeviceTransferCallbacks*) = 0;
 
     // Resets the device.
     // Ownership of the WebUSBDeviceResetCallbacks is transferred to the client.
     virtual void reset(WebUSBDeviceResetCallbacks*) = 0;
 };
 
 } // namespace blink
 
 #endif // WebUSBDevice_h