Update files to use SK_BUILD_FOR_ANDROID.

This CL also removes any unecessary references to
the ANDROID definition.
Review URL: http://codereview.appspot.com/5354049

git-svn-id: http://skia.googlecode.com/svn/trunk@2629 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/core/SkDevice.cpp b/src/core/SkDevice.cpp
index bf25ff1..a66f2a9 100644
--- a/src/core/SkDevice.cpp
+++ b/src/core/SkDevice.cpp
@@ -410,7 +410,7 @@
     draw.drawTextOnPath((const char*)text, len, path, matrix, paint);
 }
 
-#ifdef ANDROID
+#ifdef SK_BUILD_FOR_ANDROID
 void SkDevice::drawPosTextOnPath(const SkDraw& draw, const void* text, size_t len,
                                      const SkPoint pos[], const SkPaint& paint,
                                      const SkPath& path, const SkMatrix* matrix) {