Move fxge/android to if(is_android) on build

core/fxge/android/fpf_skiafont.h

Index: core/fxge/android/fpf_skiafont.h
diff --git a/core/fxge/android/fpf_skiafont.h b/core/fxge/android/fpf_skiafont.h
index 1a952628a9a743efc660fd741ebf99c58ff87284..66971d57177cbf74c48ffecd424c081dc4c94ccf 100644
--- a/core/fxge/android/fpf_skiafont.h
+++ b/core/fxge/android/fpf_skiafont.h
@@ -8,9 +8,6 @@
 #define CORE_FXGE_ANDROID_FPF_SKIAFONT_H_
 
 #include "core/fxcrt/fx_system.h"
-
-#if _FX_OS_ == _FX_ANDROID_
-
 #include "core/fxge/fx_font.h"
 
 class CFPF_SkiaFontDescriptor;
@@ -53,6 +50,4 @@ class CFPF_SkiaFont {
   uint32_t m_dwRefCount;
 };
 
-#endif  // _FX_OS_ == _FX_ANDROID_
-
 #endif  // CORE_FXGE_ANDROID_FPF_SKIAFONT_H_