Fix default alignment of drawn text when no alignment flags are passed.

ui/gfx/canvas_skia.cc

Index: ui/gfx/canvas_skia.cc
===================================================================
--- ui/gfx/canvas_skia.cc	(revision 145297)
+++ ui/gfx/canvas_skia.cc	(working copy)
@@ -138,6 +138,14 @@
   display_rect.set_height(font.GetHeight());
   render_text->SetDisplayRect(display_rect);
 
+  // Set the text alignment explicitly based on the directionality of the UI,
+  // if not specified.
+  if (!(flags & (gfx::Canvas::TEXT_ALIGN_CENTER |
+                 gfx::Canvas::TEXT_ALIGN_RIGHT |
+                 gfx::Canvas::TEXT_ALIGN_LEFT))) {
+    flags |= gfx::Canvas::DefaultCanvasTextAlignment();
+  }
+
   if (flags & gfx::Canvas::TEXT_ALIGN_RIGHT)
     render_text->SetHorizontalAlignment(gfx::ALIGN_RIGHT);
   else if (flags & gfx::Canvas::TEXT_ALIGN_CENTER)