[MacViews] Implemented text context menu

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 7e0b48310116e1fa2cf8ac004389c6bae197a084..b9024f05c765f7f593e47652dea1d7eafd173ae5 100644
--- a/ui/gfx/render_text.h
+++ b/ui/gfx/render_text.h
@@ -525,6 +525,14 @@ class GFX_EXPORT RenderText {
                                DecoratedText* decorated_word,
                                Point* baseline_point);
 
+  // Retrieves the text at the given |range| along with its styling
+  // information. |baseline_point| should correspond to the baseline point of
+  // the leftmost glyph of the |word| in the view's coordinates. Returns
+  // false, if no word can be retrieved.
+  bool GetDecoratedTextForRange(const Range& range,
+                                DecoratedText* decorated_text,
+                                Point* baseline_point);
+
   // Retrieves the text in the given |range|.
   base::string16 GetTextFromRange(const Range& range) const;