[Mac/Cleanup] Trim down Foundation.h and ApplicationServices.h includes

ui/gfx/geometry/size.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/size.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
+#elif defined(OS_IOS)
+#include <CoreGraphics/CoreGraphics.h>
+#elif defined(OS_MACOSX)
+#include <ApplicationServices/ApplicationServices.h>
 #endif
 
 #include "base/strings/stringprintf.h"
 
 namespace gfx {
 
+#if defined(OS_MACOSX)
+Size::Size(const CGSize& s)
+    : width_(s.width < 0 ? 0 : s.width),
+      height_(s.height < 0 ? 0 : s.height) {
+}
+
+Size& Size::operator=(const CGSize& s) {
+  set_width(s.width);
+  set_height(s.height);
+  return *this;
+}
+#endif
+
 #if defined(OS_WIN)
 SIZE Size::ToSIZE() const {
   SIZE s;
   s.cx = width();
   s.cy = height();
   return s;
 }
-#endif
-
-#if defined(OS_MACOSX)
-Size& Size::operator=(const CGSize& s) {
-  set_width(s.width);
-  set_height(s.height);
-  return *this;
+#elif defined(OS_MACOSX)
+CGSize Size::ToCGSize() const {
+  return CGSizeMake(width(), height());
 }
 #endif
 
 int Size::GetArea() const {
   return width() * height();
 }
 
 void Size::Enlarge(int grow_width, int grow_height) {
   SetSize(width() + grow_width, height() + grow_height);
 }
 
 void Size::SetToMin(const Size& other) {
   width_ = width() <= other.width() ? width() : other.width();
   height_ = height() <= other.height() ? height() : other.height();
 }
 
 void Size::SetToMax(const Size& other) {
   width_ = width() >= other.width() ? width() : other.width();
   height_ = height() >= other.height() ? height() : other.height();
 }
 
 std::string Size::ToString() const {
   return base::StringPrintf("%dx%d", width(), height());
 }
 
 }  // namespace gfx