Android: Do not build files not needed on the platform.

chrome/browser/ui/BUILD.gn

Index: chrome/browser/ui/BUILD.gn
diff --git a/chrome/browser/ui/BUILD.gn b/chrome/browser/ui/BUILD.gn
index 66e0fd4bfa99f394e999e8c28929c5e5cd52c270..656a48768c5a57ad5eaa4c54a0bf24ef311aa9bf 100644
--- a/chrome/browser/ui/BUILD.gn
+++ b/chrome/browser/ui/BUILD.gn
@@ -182,9 +182,6 @@ source_set("ui") {
                            "//chrome")
     deps += [ "//chrome/browser/chromeos" ]
   } else {
-    sources += rebase_path(gypi_values.chrome_browser_ui_non_chromeos_sources,
-                           ".",
-                           "//chrome")
     defines += [ "FRAME_AVATAR_BUTTON=1" ]
   }
   if (use_cups) {
@@ -526,6 +523,16 @@ source_set("test_support") {
     }
   }
 
+  if (is_android) {
+    sources -= [
+      "exclusive_access/fullscreen_controller_state_test.cc",
+      "exclusive_access/fullscreen_controller_state_test.h",
+      "exclusive_access/fullscreen_controller_state_tests.h",
+      "exclusive_access/fullscreen_controller_test.cc",
+      "exclusive_access/fullscreen_controller_test.h",
+    ]
+  }
+
   public_deps = [
     ":ui",
   ]