Allow origin trials to be enabled by script

third_party/WebKit/LayoutTests/http/tests/origin_trials/webexposed/imagecapture-origin-trial-interfaces-expected.txt

Index: third_party/WebKit/LayoutTests/http/tests/origin_trials/webexposed/imagecapture-origin-trial-interfaces-expected.txt
diff --git a/third_party/WebKit/LayoutTests/http/tests/origin_trials/webexposed/imagecapture-origin-trial-interfaces-expected.txt b/third_party/WebKit/LayoutTests/http/tests/origin_trials/webexposed/imagecapture-origin-trial-interfaces-expected.txt
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index 0000000000000000000000000000000000000000..7becb2545ce69273ca4b867942d743aae40f1dc0
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+++ b/third_party/WebKit/LayoutTests/http/tests/origin_trials/webexposed/imagecapture-origin-trial-interfaces-expected.txt
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+CONSOLE MESSAGE: line 17: Interfaces in document
+interface ImageCapture
+    getter videoStreamTrack
+    method constructor
+    method getPhotoCapabilities
+    method grabFrame
+    method setOptions
+    method takePhoto
+interface MediaSettingsRange
+    getter current
+    getter max
+    getter min
+    getter step
+    method constructor
+interface PhotoCapabilities
+    getter brightness
+    getter colorTemperature
+    getter contrast
+    getter exposureCompensation
+    getter exposureMode
+    getter fillLightMode
+    getter focusMode
+    getter imageHeight
+    getter imageWidth
+    getter iso
+    getter redEyeReduction
+    getter saturation
+    getter sharpness
+    getter whiteBalanceMode
+    getter zoom
+    method constructor
+This is a testharness.js-based test.
+PASS ImageCapture related interfaces in Origin-Trial enabled document. 
+Harness: the test ran to completion.
+