Android: Allow compiling browser without Java UI

chrome/common/features.gni

Index: chrome/common/features.gni
diff --git a/chrome/common/features.gni b/chrome/common/features.gni
index 2e92745ca3b5ae136b5ec6bc9eaa1ee73abd98a1..3188c6c6244fb32fe5ef09c73d004f68ff0247d5 100644
--- a/chrome/common/features.gni
+++ b/chrome/common/features.gni
@@ -7,6 +7,12 @@
 
 declare_args() {
   enable_google_now = !is_ios && !is_android
+
+  # Whether the Java UI is being used (Java infobars and popups, Java native
+  # settings and first run experience, sign-in etc.).
+  # Default to true if compiling for android, but allow this being overriden
+  # through the environment.
+  android_java_ui = is_android
 }
 
 chrome_grit_defines = [ "enable_google_now=$enable_google_now" ]