tools/battor_agent: Stops BattOrAgent from being built on Android

BUILD.gn

Index: BUILD.gn
diff --git a/BUILD.gn b/BUILD.gn
index c64f9957c5e6764819d301301c4e635fe68cf9ce..b11b2fc130775f33b46cd82b6a7d7156462e38be 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -148,6 +148,7 @@ group("both_gn_and_gyp") {
       "//third_party/cacheinvalidation:cacheinvalidation_unittests",
       "//third_party/codesighs",
       "//third_party/pdfium/samples:pdfium_test",
+      "//tools/battor_agent",
       "//tools/gn",
       "//tools/gn:gn_unittests",
       "//tools/perf/clear_system_cache",
@@ -222,10 +223,6 @@ group("both_gn_and_gyp") {
     }
   }
 
-  if (is_mac || is_win || is_linux) {
-    deps += [ "//tools/battor_agent" ]
-  }
-
   deps += root_extra_deps
 
   if (enable_extensions) {