[RenderText] Adding vertical alignment options

ui/gfx/render_text.h

Index: ui/gfx/render_text.h
diff --git a/ui/gfx/render_text.h b/ui/gfx/render_text.h
index 1b33b3c99ab207e2c31763931209015ba573bb8b..c21a15fe722f6fa87c96295e3121a479ea74e191 100644
--- a/ui/gfx/render_text.h
+++ b/ui/gfx/render_text.h
@@ -214,6 +214,9 @@ class GFX_EXPORT RenderText {
   }
   void SetHorizontalAlignment(HorizontalAlignment alignment);
 
+  VerticalAlignment vertical_alignment() const { return vertical_alignment_; }
+  void SetVerticalAlignment(VerticalAlignment alignment);
+
   const FontList& font_list() const { return font_list_; }
   void SetFontList(const FontList& font_list);
 
@@ -644,6 +647,7 @@ class GFX_EXPORT RenderText {
   FRIEND_TEST_ALL_PREFIXES(RenderTextTest, BreakRunsByUnicodeBlocks);
   FRIEND_TEST_ALL_PREFIXES(RenderTextTest, PangoAttributes);
   FRIEND_TEST_ALL_PREFIXES(RenderTextTest, StringFitsOwnWidth);
+  FRIEND_TEST_ALL_PREFIXES(RenderTextTest, VerticalAlignment);
 
   // Set the cursor to |position|, with the caret trailing the previous
   // grapheme, or if there is no previous grapheme, leading the cursor position.
@@ -680,6 +684,10 @@ class GFX_EXPORT RenderText {
   // default is to align left if the application UI is LTR and right if RTL.
   HorizontalAlignment horizontal_alignment_;
 
+  // Vertical alignment of the text with respect to |display_rect_|.  The
+  // default is to vertically align middle.
+  VerticalAlignment vertical_alignment_;
+
   // The text directionality mode, defaults to DIRECTIONALITY_FROM_TEXT.
   DirectionalityMode directionality_mode_;