Name core/fxge/android files appropriately and use one file per class

core/fxge/android/fx_android_imp.cpp

Index: core/fxge/android/fx_android_imp.cpp
diff --git a/core/fxge/android/fx_android_imp.cpp b/core/fxge/android/fx_android_imp.cpp
index 6e9dafc0e4ac7bf5ef79ec9e14f5edb950c74ab2..b8e7c5b2180944fa5658a6b646e97c8836318c8c 100644
--- a/core/fxge/android/fx_android_imp.cpp
+++ b/core/fxge/android/fx_android_imp.cpp
@@ -4,16 +4,13 @@
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
-#include "core/fxcrt/fx_system.h"
-
-#if _FX_OS_ == _FX_ANDROID_
+#include "core/fxge/cfx_gemodule.h"
 
 #include <memory>
 #include <utility>
 
-#include "core/fxge/android/fpf_skiamodule.h"
-#include "core/fxge/android/fx_android_font.h"
-#include "core/fxge/cfx_gemodule.h"
+#include "core/fxge/android/cfpf_skiadevicemodule.h"
+#include "core/fxge/android/cfx_androidfontinfo.h"
 
 void CFX_GEModule::InitPlatform() {
   CFPF_SkiaDeviceModule* pDeviceModule = CFPF_GetSkiaDeviceModule();
@@ -33,5 +30,3 @@ void CFX_GEModule::DestroyPlatform() {
   if (m_pPlatformData)
     static_cast<CFPF_SkiaDeviceModule*>(m_pPlatformData)->Destroy();
 }
-
-#endif  // _FX_OS_ == _FX_ANDROID_