Supports gfx::FontList in gfx::Canvas and ui::ElideText family.

ui/gfx/text_utils.h

Index: ui/gfx/text_utils.h
diff --git a/ui/gfx/text_utils.h b/ui/gfx/text_utils.h
index 42bce4397316966d33565ff84408996ece8cec87..15bf3cadfbb4291197f09828116a9b25af9d5b6e 100644
--- a/ui/gfx/text_utils.h
+++ b/ui/gfx/text_utils.h
@@ -10,6 +10,8 @@
 
 namespace gfx {
 
+class FontList;
+
 // Strip the accelerator char (typically '&') from a menu string.  A double
 // accelerator char ('&&') will be converted to a single char.  The out params
 // |accelerated_char_pos| and |accelerated_char_span| will be set to the index
@@ -20,6 +22,11 @@ UI_EXPORT base::string16 RemoveAcceleratorChar(const base::string16& s,
                                                int* accelerated_char_pos,
                                                int* accelerated_char_span);
 
+// Returns the number of horizontal pixels needed to display the specified
+// |text| with |font_list|.
+UI_EXPORT int GetStringWidth(const base::string16& text,
+                             const FontList& font_list);
+
 }  // namespace gfx
 
 #endif  // UI_GFX_TEXT_UTILS_H_