Revert of 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 bf8116354ab946e4bdc46772b7226f52e16bbc2a..7d1b8334f72e0d224f341e6f0ee84fa75c32c41d 100644
--- a/components/test_runner/test_runner.cc
+++ b/components/test_runner/test_runner.cc
@@ -2316,8 +2316,6 @@
     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);