Eagerly install Origin Trial features on window.

third_party/WebKit/Source/bindings/core/v8/ConditionalFeatures.h

 // 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.
 
 #ifndef ConditionalFeatures_h
 #define ConditionalFeatures_h
 
 #include "bindings/core/v8/DOMWrapperWorld.h"
 #include "core/CoreExport.h"
 #include <v8.h>
@@ skipping 16 matching lines @@
                                             v8::Local<v8::Object>,
                                             v8::Local<v8::Function>);
 
 // Sets the function to be called by |installConditionalFeatures|. The function
 // is initially set to the private |installConditionalFeaturesCore| function,
 // but can be overridden by this function. A pointer to the previously set
 // function is returned, so that functions can be chained.
 CORE_EXPORT InstallConditionalFeaturesFunction
     setInstallConditionalFeaturesFunction(InstallConditionalFeaturesFunction);
 
+// Installs all of the conditionally enabled V8 bindings on the Window object.
+// This is called separately from other objects so that attributes and
+// interfaces which need to be visible on the global object are installed even
+// when the V8 context is reused (i.e., after navigation)
+CORE_EXPORT void installPendingConditionalFeaturesOnWindow(const ScriptState*);
+
 }  // namespace blink
 
 #endif  // ConditionalFeatures_h