add dummpy SkFontMgr::Factory() impl to font backends, so we can start testing it
Review URL: https://codereview.chromium.org/13119021

git-svn-id: http://skia.googlecode.com/svn/trunk@8415 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/ports/SkFontHost_linux.cpp b/src/ports/SkFontHost_linux.cpp
index 0ddcdb7..8825919 100644
--- a/src/ports/SkFontHost_linux.cpp
+++ b/src/ports/SkFontHost_linux.cpp
@@ -517,3 +517,12 @@
     SkAutoTUnref<SkStream> stream(SkStream::NewFromFile(path));
     return stream.get() ? CreateTypefaceFromStream(stream) : NULL;
 }
+
+///////////////////////////////////////////////////////////////////////////////
+
+#include "SkFontMgr.h"
+
+SkFontMgr* SkFontMgr::Factory() {
+    // todo
+    return NULL;
+}