fix build warning for unused function

tests/FontMgrTest.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "Test.h"
 
 #include "SkCommandLineFlags.h"
 #include "SkFontMgr.h"
 #include "SkTypeface.h"
 
+#if !defined(SK_BUILD_FOR_ANDROID)
 /*
  *  If the font backend is going to "alias" some font names to other fonts
  *  (e.g. sans -> Arial) then we want to at least get the same typeface back
  *  if we request the alias name multiple times.
  */
 static void test_badnames(skiatest::Reporter* reporter) {
     const char* inName = "sans";
     SkAutoTUnref<SkTypeface> first(SkTypeface::CreateFromName(inName, SkTypeface::kNormal));
 
     SkString name;
     for (int i = 0; i < 10; ++i) {
         SkAutoTUnref<SkTypeface> face(SkTypeface::CreateFromName(inName, SkTypeface::kNormal));
 #if 0
         face->getFamilyName(&name);
         printf("request %s, received %s, first id %x received %x\n",
                inName, name.c_str(), first->uniqueID(), face->uniqueID());
 #endif
         REPORTER_ASSERT(reporter, first->uniqueID() == face->uniqueID());
     }
 }
+#endif
 
 static void test_fontiter(skiatest::Reporter* reporter, bool verbose) {
     SkAutoTUnref<SkFontMgr> fm(SkFontMgr::RefDefault());
     int count = fm->countFamilies();
 
     for (int i = 0; i < count; ++i) {
         SkString fname;
         fm->getFamilyName(i, &fname);
         REPORTER_ASSERT(reporter, fname.size() > 0);
 
@@ skipping 27 matching lines @@
 static void TestFontMgr(skiatest::Reporter* reporter) {
     test_fontiter(reporter, FLAGS_verboseFontMgr);
 // The badnames test fails on Android because "sans" is not a valid alias
 #if !defined(SK_BUILD_FOR_ANDROID)
     test_badnames(reporter);
 #endif
 }
 
 #include "TestClassDef.h"
 DEFINE_TESTCLASS("FontMgr", FontMgrClass, TestFontMgr)