ui/gfx: Add ToString() function to Rect class.

ui/gfx/rect.cc

 // Copyright (c) 2011 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/rect.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #elif defined(OS_MACOSX)
 #include <CoreGraphics/CGGeometry.h>
 #elif defined(TOOLKIT_USES_GTK)
 #include <gdk/gdk.h>
 #endif
 #if defined(USE_WAYLAND)
 #include <cairo.h>
 #endif
 
-#include <ostream>
-
+#include "base/stringprintf.h"
 #include "ui/gfx/insets.h"
 
 namespace {
 
 void AdjustAlongAxis(int dst_origin, int dst_size, int* origin, int* size) {
   if (*origin < dst_origin) {
     *origin = dst_origin;
     *size = std::min(dst_size, *size);
   } else {
     *size = std::min(dst_size, *size);
@@ skipping 17 matching lines @@
 }
 
 Rect::Rect(const gfx::Size& size)
     : size_(size) {
 }
 
 Rect::Rect(const gfx::Point& origin, const gfx::Size& size)
     : origin_(origin), size_(size) {
 }
 
+Rect::~Rect() {}
+
 #if defined(OS_WIN)
 Rect::Rect(const RECT& r)
     : origin_(r.left, r.top) {
   set_width(std::abs(r.right - r.left));
   set_height(std::abs(r.bottom - r.top));
 }
 
 Rect& Rect::operator=(const RECT& r) {
   origin_.SetPoint(r.left, r.top);
   set_width(std::abs(r.right - r.left));
@@ skipping 35 matching lines @@
 }
 
 Rect& Rect::operator=(const cairo_rectangle_int_t& r) {
   origin_.SetPoint(r.x, r.y);
   set_width(r.width);
   set_height(r.height);
   return *this;
 }
 #endif
 
-
 void Rect::SetRect(int x, int y, int width, int height) {
   origin_.SetPoint(x, y);
   set_width(width);
   set_height(height);
 }
 
 void Rect::Inset(const gfx::Insets& insets) {
   Inset(insets.left(), insets.top(), insets.right(), insets.bottom());
 }
 
@@ skipping 143 matching lines @@
   return Rect(new_x, new_y, new_width, new_height);
 }
 
 bool Rect::SharesEdgeWith(const gfx::Rect& rect) const {
   return (y() == rect.y() && height() == rect.height() &&
              (x() == rect.right() || right() == rect.x())) ||
          (x() == rect.x() && width() == rect.width() &&
              (y() == rect.bottom() || bottom() == rect.y()));
 }
 
-std::ostream& operator<<(std::ostream& out, const gfx::Rect& r) {
-  return out << r.origin().ToString() << " " << r.size().ToString();
+std::string Rect::ToString() const {
+  return base::StringPrintf("%s %s",
+                            origin_.ToString().c_str(),
+                            size_.ToString().c_str());
 }
 
 }  // namespace gfx