fix some bit-rot in the ios port of sampleapp

samplecode/SampleApp.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SampleApp.h"
 
 #include "OverView.h"
@@ skipping 2363 matching lines @@
 // FIXME: this should be in a header
 void get_preferred_size(int* x, int* y, int* width, int* height);
 void get_preferred_size(int* x, int* y, int* width, int* height) {
     *x = 10;
     *y = 50;
     *width = 640;
     *height = 480;
 }
 
 #ifdef SK_BUILD_FOR_IOS
+#include "SkApplication.h"
 IOS_launch_type set_cmd_line_args(int , char *[], const char* resourceDir) {
     SetResourcePath(resourceDir);
     return kApplication__iOSLaunchType;
 }
 #endif
 
 void application_init() {
 //    setenv("ANDROID_ROOT", "../../../data", 0);
 #ifdef SK_BUILD_FOR_MAC
     setenv("ANDROID_ROOT", "/android/device/data", 0);
 #endif
     SkGraphics::Init();
     SkEvent::Init();
 }
 
 void application_term() {
     SkEvent::Term();
     SkGraphics::Term();
 }