Remove command line flags and prefs for disabling Java.

components/test_runner/test_preferences.cc

Index: components/test_runner/test_preferences.cc
diff --git a/components/test_runner/test_preferences.cc b/components/test_runner/test_preferences.cc
index e4c0ca6a14b161023d3d68b2a4cb58112b2873c0..c34ae201a309ffeac862ecfc6817e4f4e8fa2efc 100644
--- a/components/test_runner/test_preferences.cc
+++ b/components/test_runner/test_preferences.cc
@@ -25,7 +25,6 @@ void TestPreferences::Reset() {
   experimental_webgl_enabled = false;
   experimental_css_regions_enabled = true;
   experimental_css_grid_layout_enabled = true;
-  java_enabled = false;
   java_script_can_access_clipboard = true;
   java_script_can_open_windows_automatically = true;
   supports_multiple_windows = true;