Move temporary MathUtil wrappers to permanent home in gfx::Transform

ui/gfx/vector3d_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.
 
 // Defines a simple float vector class.  This class is used to indicate a
 // distance in two dimensions between two points. Subtracting two points should
 // produce a vector, and adding a vector to a point produces the point at the
 // vector's distance from the original point.
 
 #ifndef UI_GFX_VECTOR3D_F_H_
 #define UI_GFX_VECTOR3D_F_H_
 
 #include <string>
 
 #include "ui/base/ui_export.h"
 #include "ui/gfx/vector2d_f.h"
 
 namespace gfx {
 
 class UI_EXPORT Vector3dF {
  public:
   Vector3dF();
   Vector3dF(float x, float y, float z);
 
   explicit Vector3dF(const Vector2dF& other);
 
+  static Vector3dF XAxis() { return Vector3dF(1, 0, 0); }
+  static Vector3dF YAxis() { return Vector3dF(0, 1, 0); }
+  static Vector3dF ZAxis() { return Vector3dF(0, 0, 1); }
+
   float x() const { return x_; }
   void set_x(float x) { x_ = x; }
 
   float y() const { return y_; }
   void set_y(float y) { y_ = y; }
 
   float z() const { return z_; }
   void set_z(float z) { z_ = z; }
 
   // True if all components of the vector are 0.
@@ skipping 78 matching lines @@
                                   float z_scale);
 
 // Return a vector that is |v| scaled by the given scale factor.
 inline Vector3dF ScaleVector3d(const Vector3dF& v, float scale) {
   return ScaleVector3d(v, scale, scale, scale);
 }
 
 }  // namespace gfx
 
 #endif // UI_GFX_VECTOR3D_F_H_