Eagerly install Origin Trial features on window.

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

Index: third_party/WebKit/Source/bindings/core/v8/ConditionalFeatures.h
diff --git a/third_party/WebKit/Source/bindings/core/v8/ConditionalFeatures.h b/third_party/WebKit/Source/bindings/core/v8/ConditionalFeatures.h
index c5fb0dda47b94ba9668f714938041285eea1fe2f..bd017142b45d3a5a443b19947516c7dcee18e7b6 100644
--- a/third_party/WebKit/Source/bindings/core/v8/ConditionalFeatures.h
+++ b/third_party/WebKit/Source/bindings/core/v8/ConditionalFeatures.h
@@ -34,6 +34,12 @@ CORE_EXPORT void installConditionalFeatures(const WrapperTypeInfo*,
 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