Move geometric types to a separate, more lightweight target.

ui/gfx/point3_f.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/point3_f.h"
-
-#include "base/strings/stringprintf.h"
-
-namespace gfx {
-
-std::string Point3F::ToString() const {
-  return base::StringPrintf("%f,%f,%f", x_, y_, z_);
-}
-
-Point3F operator+(const Point3F& lhs, const Vector3dF& rhs) {
-  float x = lhs.x() + rhs.x();
-  float y = lhs.y() + rhs.y();
-  float z = lhs.z() + rhs.z();
-  return Point3F(x, y, z);
-}
-
-// Subtract a vector from a point, producing a new point offset by the vector's
-// inverse.
-Point3F operator-(const Point3F& lhs, const Vector3dF& rhs) {
-  float x = lhs.x() - rhs.x();
-  float y = lhs.y() - rhs.y();
-  float z = lhs.z() - rhs.z();
-  return Point3F(x, y, z);
-}
-
-// Subtract one point from another, producing a vector that represents the
-// distances between the two points along each axis.
-Vector3dF operator-(const Point3F& lhs, const Point3F& rhs) {
-  float x = lhs.x() - rhs.x();
-  float y = lhs.y() - rhs.y();
-  float z = lhs.z() - rhs.z();
-  return Vector3dF(x, y, z);
-}
-
-}  // namespace gfx