Enable ImageCapture origin trial experiment

third_party/WebKit/Source/modules/imagecapture/ImageCapture.idl

 // Copyright 2016 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.
 
 // https://www.w3.org/TR/image-capture
 
 [
     ActiveScriptWrappable,
     ConstructorCallWith=ExecutionContext,
     Constructor(MediaStreamTrack track),
     DependentLifetime,
     RaisesException=Constructor,
-    RuntimeEnabled=ImageCapture,
+    OriginTrialEnabled=ImageCapture,
 ] interface ImageCapture {
     readonly attribute MediaStreamTrack videoStreamTrack;
 
     [CallWith=ScriptState, RaisesException] Promise<PhotoCapabilities> getPhotoCapabilities();
     [CallWith=ScriptState, RaisesException] Promise<void> setOptions(PhotoSettings photoSettings);
     [CallWith=ScriptState, RaisesException] Promise<Blob> takePhoto();
     [CallWith=ScriptState, RaisesException] Promise<ImageBitmap> grabFrame();
 };