Aura on Android: Common GN build overrides.

build/config/features.gni

Index: build/config/features.gni
diff --git a/build/config/features.gni b/build/config/features.gni
index 9fb4205257a30f640613ee21b27252fd030e7133..5c9d9a89ec9ab5b27cde66a544b8b561192210b1 100644
--- a/build/config/features.gni
+++ b/build/config/features.gni
@@ -25,6 +25,7 @@ declare_args() {
   # Multicast DNS.
   enable_mdns = is_win || is_linux
 
+  enable_extensions = !is_android && !is_ios
   enable_plugins = (!is_android && !is_ios) || is_chromecast
   enable_pdf = !is_android && !is_ios && !is_chromecast
 
@@ -163,8 +164,6 @@ enable_web_speech = !is_android && !is_ios
 
 use_dbus = is_linux && !is_chromecast && !is_headless
 

[no sievers, 2015/11/24 22:45:28]

I was also just wondering why not everything is inside declare_args().
(I came across other stuff we might want to turn off in the interim, which has
dependencies on java.)

-enable_extensions = !is_android && !is_ios
-
 enable_task_manager = !is_ios && !is_android
 
 enable_themes = !is_android && !is_ios