Windows implementation of multiline RenderText

ui/gfx/render_text_win.h

Index: ui/gfx/render_text_win.h
diff --git a/ui/gfx/render_text_win.h b/ui/gfx/render_text_win.h
index 620ef092dff98fd2175427ab390b253aa3057198..b9ffe2dd8807cdbe681af4af822c786d9fc83cbe 100644
--- a/ui/gfx/render_text_win.h
+++ b/ui/gfx/render_text_win.h
@@ -64,6 +64,7 @@ class RenderTextWin : public RenderText {
 
   // Overridden from RenderText:
   virtual Size GetStringSize() OVERRIDE;
+  virtual Size GetMultilineTextSize() OVERRIDE;
   virtual int GetBaseline() OVERRIDE;
   virtual SelectionModel FindCursorPosition(const Point& point) OVERRIDE;
   virtual std::vector<FontSpan> GetFontSpansForTesting() OVERRIDE;
@@ -87,6 +88,8 @@ class RenderTextWin : public RenderText {
 
  private:
   FRIEND_TEST_ALL_PREFIXES(RenderTextTest, Win_LogicalClusters);
+  FRIEND_TEST_ALL_PREFIXES(RenderTextTest, Multiline_MinWidth);
+  FRIEND_TEST_ALL_PREFIXES(RenderTextTest, Multiline_NormalWidth);
 
   void ItemizeLogicalText();
   void LayoutVisualText();
@@ -122,6 +125,7 @@ class RenderTextWin : public RenderText {
 
   ScopedVector<internal::TextRun> runs_;
   Size string_size_;
+  Size multiline_string_size_;
 
   // A common vertical baseline for all the text runs. This is computed as the
   // largest baseline over all the runs' fonts.