Don't do anything in Android GN build while the current bugs are fixed.

BUILD.gn

Index: BUILD.gn
diff --git a/BUILD.gn b/BUILD.gn
index 2aac18abd7baf7939c4d5338854c3fabca053599..4d85e40e6d8c6991237b7f5954cfa58e44ff671a 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -10,6 +10,17 @@
 
 import("//build/config/ui.gni")
 
+# Android GN build has some bugs: http://crbug.com/405686
+if (is_android) {
+
+group("root") {
+  deps = [
+    "//base",
+  ]
+}
+
+} else {
+
 # In GN, a "group" is a dummy target that just lists other targets.
 group("root") {
   # Note that some dependencies are commented out. These are things that are
@@ -230,3 +241,5 @@ group("root") {
     ]
   }
 }
+
+}