Update Android's FontHost to return NULL if familyName does not match

tests/Typeface.cpp

Index: tests/Typeface.cpp
diff --git a/tests/Typeface.cpp b/tests/Typeface.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..76fde7a8b897f8e6b6015cf80e991385220ce792
--- /dev/null
+++ b/tests/Typeface.cpp
@@ -0,0 +1,30 @@
+
+/*
+ * 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 "SkTypeface.h"
+
+static void TestDefaultTypeface(skiatest::Reporter* reporter) {
+
+    SkAutoTUnref<SkTypeface> t1(SkTypeface::CreateFromName(NULL, SkTypeface::kNormal));
+    SkAutoTUnref<SkTypeface> t2(SkTypeface::RefDefault(SkTypeface::kNormal));
+
+    REPORTER_ASSERT(reporter, SkTypeface::Equal(t1.get(), t2.get()));
+    REPORTER_ASSERT(reporter, SkTypeface::Equal(0, t1.get()));
+    REPORTER_ASSERT(reporter, SkTypeface::Equal(0, t2.get()));
+    REPORTER_ASSERT(reporter, SkTypeface::Equal(t1.get(), 0));
+    REPORTER_ASSERT(reporter, SkTypeface::Equal(t2.get(), 0));
+
+#ifdef SK_BUILD_FOR_ANDROID
+    SkAutoTUnref<SkTypeface> t3(SkTypeface::CreateFromName("non-existent-font", SkTypeface::kNormal));
+    REPORTER_ASSERT(reporter, NULL == t3.get());
+#endif
+}
+
+#include "TestClassDef.h"
+DEFINE_TESTCLASS("Typeface", TypefaceTestClass, TestDefaultTypeface)