gfx: Do the ToEnclosingRect in double precision.

ui/gfx/geometry/rect_conversions.cc

 // 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.
 
 #include "ui/gfx/geometry/rect_conversions.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/logging.h"
 #include "ui/gfx/geometry/safe_integer_conversions.h"
 
 namespace gfx {
 
 Rect ToEnclosingRect(const RectF& rect) {
   int min_x = ToFlooredInt(rect.x());
   int min_y = ToFlooredInt(rect.y());
   float max_x = rect.right();
   float max_y = rect.bottom();
   int width =
       rect.width() == 0
           ? 0
           : std::max(
-                ToCeiledInt(static_cast<float>(ToCeiledInt(max_x)) - min_x), 0);
+                ToCeiledInt(static_cast<double>(ToCeiledInt(max_x)) - min_x),
+                0);
   int height =
       rect.height() == 0
           ? 0
           : std::max(
-                ToCeiledInt(static_cast<float>(ToCeiledInt(max_y)) - min_y), 0);
+                ToCeiledInt(static_cast<double>(ToCeiledInt(max_y)) - min_y),
+                0);
   return Rect(min_x, min_y, width, height);
 }
 
 Rect ToEnclosedRect(const RectF& rect) {
   int min_x = ToCeiledInt(rect.x());
   int min_y = ToCeiledInt(rect.y());
   float max_x = rect.right();
   float max_y = rect.bottom();
   int width = std::max(
       ToFlooredInt(static_cast<float>(ToFlooredInt(max_x)) - min_x), 0);
@@ skipping 43 matching lines @@
 
 Rect ToFlooredRectDeprecated(const RectF& rect) {
   return Rect(ToFlooredInt(rect.x()),
               ToFlooredInt(rect.y()),
               ToFlooredInt(rect.width()),
               ToFlooredInt(rect.height()));
 }
 
 }  // namespace gfx