Uses and returns the fractional width in text eliding

ui/gfx/rect_f.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_GFX_RECT_F_H_
 #define UI_GFX_RECT_F_H_
 
 #include <string>
 
 #include "ui/gfx/point_f.h"
 #include "ui/gfx/rect_base.h"
 #include "ui/gfx/size_f.h"
 #include "ui/gfx/vector2d_f.h"
 
+#if defined(OS_IOS)
+#include <CoreGraphics/CoreGraphics.h>
+#elif defined(OS_MACOSX)
+#include <ApplicationServices/ApplicationServices.h>
+#endif
+
 namespace gfx {
 
 class InsetsF;
 
 // A floating version of gfx::Rect.
 class GFX_EXPORT RectF
     : public RectBase<RectF, PointF, SizeF, InsetsF, Vector2dF, float> {
  public:
   RectF()
       : RectBase<RectF, PointF, SizeF, InsetsF, Vector2dF, float>
@@ skipping 10 matching lines @@
   explicit RectF(const SizeF& size)
       : RectBase<RectF, PointF, SizeF, InsetsF, Vector2dF, float>
             (size) {}
 
   RectF(const PointF& origin, const SizeF& size)
       : RectBase<RectF, PointF, SizeF, InsetsF, Vector2dF, float>
             (origin, size) {}
 
   ~RectF() {}
 
+#if defined(OS_MACOSX)
+  // Construct an equivalent CoreGraphics object.
+  CGRect ToCGRect() const;

[msw, 2013/10/01 02:42:48]

I don't see this used anywhere in your patch; remove it.

[jianli, 2013/10/01 18:56:50]

Indeed it is needed in autofill_popup_view_cocoa.mm and
autofill_popup_view_bridge.mm (not touched):
  NSRect frame = NSRectFromCGRect(controller_->popup_bounds().ToCGRect());

  NSRect rowBounds =
        NSRectFromCGRect(controller_->GetRowBounds(i).ToCGRect());

Now we return RectF for popup_bounds and GetRowBounds, so we need to port
ToCGRect support to RectF.

+#endif
+
   // Scales the rectangle by |scale|.
   void Scale(float scale) {
     Scale(scale, scale);
   }
 
   void Scale(float x_scale, float y_scale) {
     set_origin(ScalePoint(origin(), x_scale, y_scale));
     set_size(ScaleSize(size(), x_scale, y_scale));
   }
 
@@ skipping 49 matching lines @@
 // contained within the rect, because they will appear on one of these edges.
 GFX_EXPORT RectF BoundingRect(const PointF& p1, const PointF& p2);
 
 #if !defined(COMPILER_MSVC)
 extern template class RectBase<RectF, PointF, SizeF, InsetsF, Vector2dF, float>;
 #endif
 
 }  // namespace gfx
 
 #endif  // UI_GFX_RECT_F_H_