Track USB device configuration state in Blink.

third_party/WebKit/Source/modules/webusb/USBDevice.h

Index: third_party/WebKit/Source/modules/webusb/USBDevice.h
diff --git a/third_party/WebKit/Source/modules/webusb/USBDevice.h b/third_party/WebKit/Source/modules/webusb/USBDevice.h
index aa6d419dc9ac9d3efa7f6ac6fe5499b3d5463b30..5742c1ee23061ae89b55f9a6e08ea8d75ab6700e 100644
--- a/third_party/WebKit/Source/modules/webusb/USBDevice.h
+++ b/third_party/WebKit/Source/modules/webusb/USBDevice.h
@@ -42,6 +42,7 @@ public:
         , m_device(device)
         , m_opened(false)
         , m_deviceStateChangeInProgress(false)
+        , m_activeConfiguration(m_device->info().activeConfiguration)
     {
     }
 
@@ -49,6 +50,7 @@ public:
 
     const WebUSBDeviceInfo& info() const { return m_device->info(); }
     void onDeviceOpenedOrClosed(bool);
+    void onConfigurationSelected(bool success, uint8_t configurationValue);
 
     // IDL exposed interface:
     String guid() const { return info().guid; }
@@ -66,13 +68,13 @@ public:
     String manufacturerName() const { return info().manufacturerName; }
     String productName() const { return info().productName; }
     String serialNumber() const { return info().serialNumber; }
+    USBConfiguration* configuration() const;
     HeapVector<Member<USBConfiguration>> configurations() const;
     bool opened() const { return m_opened; }
 
     ScriptPromise open(ScriptState*);
     ScriptPromise close(ScriptState*);
-    ScriptPromise getConfiguration(ScriptState*);
-    ScriptPromise setConfiguration(ScriptState*, uint8_t configurationValue);
+    ScriptPromise selectConfiguration(ScriptState*, uint8_t configurationValue);
     ScriptPromise claimInterface(ScriptState*, uint8_t interfaceNumber);
     ScriptPromise releaseInterface(ScriptState*, uint8_t interfaceNumber);
     ScriptPromise setInterface(ScriptState*, uint8_t interfaceNumber, uint8_t alternateSetting);
@@ -94,6 +96,7 @@ private:
     OwnPtr<WebUSBDevice> m_device;
     bool m_opened;
     bool m_deviceStateChangeInProgress;
+    uint8_t m_activeConfiguration;
 };
 
 } // namespace blink