Use PartitionAlloc for fastMalloc on Android

Source/config.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2013 Apple Inc.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2007-2009 Torch Mobile, Inc.
  * Copyright (C) 2010, 2011 Research In Motion Limited. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 80 matching lines @@
 #define WTF_USE_LOW_QUALITY_IMAGE_NO_JPEG_DITHERING 1
 #define WTF_USE_LOW_QUALITY_IMAGE_NO_JPEG_FANCY_UPSAMPLING 1
 #else
 #define WTF_USE_ICCJPEG 1
 #define WTF_USE_QCMSLIB 1
 #endif
 
 #if OS(MACOSX)
 #define WTF_USE_CF 1
 #define WTF_USE_RUBBER_BANDING 1
+#endif /* OS(MACOSX) */
 
-/* We can't override the global operator new and delete on OS(MACOSX) because
- * some object are allocated by WebKit and deallocated by the embedder. */
-#else /* !OS(MACOSX) */
-/* On non-OS(MACOSX), the "system malloc" is actually TCMalloc anyway, so there's
+#if !OS(MACOSX) && !OS(ANDROID)
+/* On other platforms the "system malloc" is TCMalloc, so there's
  * no need to use Blink's fast PartitionAlloc allocator. */
 #define WTF_USE_SYSTEM_MALLOC 1
-#endif /* OS(MACOSX) */
+#endif /* !OS(MACOSX) && !OS(ANDROID) */
 
 #if OS(POSIX)
 #define HAVE_MMAP 1
 #define HAVE_SIGNAL_H 1
 #define HAVE_SYS_TIME_H 1
 #define WTF_USE_PTHREADS 1
 #endif /* OS(POSIX) */
 
 #if !defined(HAVE_VASPRINTF)
 #if !COMPILER(MSVC)
@@ skipping 44 matching lines @@
 #define SKIP_STATIC_CONSTRUCTORS_ON_GCC 1
 #endif
 
 #ifndef __STDC_FORMAT_MACROS
 #define __STDC_FORMAT_MACROS 1
 #endif
 
 #if OS(LINUX) || OS(ANDROID) || ENABLE(HARFBUZZ_ON_WINDOWS)
 #define WTF_USE_HARFBUZZ 1
 #endif