Implement right-to-left text rendering in Pepper.

ppapi/tests/test_browser_font.h

Index: ppapi/tests/test_browser_font.h
diff --git a/ppapi/tests/test_browser_font.h b/ppapi/tests/test_browser_font.h
index eba1c7e287e3142fc3bc7fdfe5adcabaac780cff..c166212b93aaaefd785ce53a5603f49c0fca2f62 100644
--- a/ppapi/tests/test_browser_font.h
+++ b/ppapi/tests/test_browser_font.h
@@ -18,7 +18,9 @@ class TestBrowserFont : public TestCase {
  private:
   std::string TestFontFamilies();
   std::string TestMeasure();
+  std::string TestMeasureRTL();
   std::string TestCharPos();
+  std::string TestCharPosRTL();
   std::string TestDraw();
 };