Fix re-usage of stale cached WebPreferences in RenderViewHost.

components/test_runner/test_runner.cc

Index: components/test_runner/test_runner.cc
diff --git a/components/test_runner/test_runner.cc b/components/test_runner/test_runner.cc
index 7d1b8334f72e0d224f341e6f0ee84fa75c32c41d..bf8116354ab946e4bdc46772b7226f52e16bbc2a 100644
--- a/components/test_runner/test_runner.cc
+++ b/components/test_runner/test_runner.cc
@@ -2316,6 +2316,8 @@ void TestRunner::OverridePreference(const std::string& key,
     prefs->should_respect_image_orientation = value->BooleanValue();
   } else if (key == "WebKitWebSecurityEnabled") {
     prefs->web_security_enabled = value->BooleanValue();
+  } else if (key == "WebKitSpatialNavigationEnabled") {
+    prefs->spatial_navigation_enabled = value->BooleanValue();
   } else {
     std::string message("Invalid name for preference: ");
     message.append(key);