NOT FOR REVIEW: Aura on Android

ui/platform_window/android/platform_window_android.h

Index: ui/platform_window/android/platform_window_android.h
diff --git a/ui/platform_window/android/platform_window_android.h b/ui/platform_window/android/platform_window_android.h
index 273112621189cfddfb1addb6accb6a0924ceaf0f..da2750f4a0ff20fd99666c94e5782ae1102e6e0e 100644
--- a/ui/platform_window/android/platform_window_android.h
+++ b/ui/platform_window/android/platform_window_android.h
@@ -12,6 +12,7 @@
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/sequential_id_generator.h"
+#include "ui/platform_window/android/android_window_export.h"
 #include "ui/platform_window/android/platform_ime_controller_android.h"
 #include "ui/platform_window/platform_window.h"
 
@@ -19,7 +20,7 @@ struct ANativeWindow;
 
 namespace ui {
 
-class PlatformWindowAndroid : public PlatformWindow {
+class ANDROID_WINDOW_EXPORT PlatformWindowAndroid : public PlatformWindow {
  public:
   static bool Register(JNIEnv* env);
 
@@ -55,6 +56,7 @@ class PlatformWindowAndroid : public PlatformWindow {
                 bool pressed,
                 jint key_code,
                 jint unicode_character);
+  void FocusChanged(JNIEnv* env, jobject obj, bool gained_focus);
 
  private:
   void ReleaseWindow();