[DevTools] Refactor emulated devices modes.

Source/devtools/front_end/common/Geometry.js

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 12 matching lines @@
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 WebInspector.Geometry = {};
 
-/** @typedef {!{top: number, left: number, width: number, height: number}} */
-WebInspector.Geometry.Rect;
-
-/** @typedef {!{top: number, left: number}} */
-WebInspector.Geometry.Insets;
-
 /**
  * @type {number}
  */
 WebInspector.Geometry._Eps = 1e-5;
 
 /**
  * @constructor
  * @param {number} x
  * @param {number} y
  * @param {number} z
@@ skipping 406 matching lines @@
 /**
  * @param {!Constraints|number} value
  * @return {!Constraints}
  */
 Constraints.prototype.addHeight = function(value)
 {
     if (typeof value === "number")
         return new Constraints(this.minimum.addHeight(value), this.preferred.addHeight(value));
     return new Constraints(this.minimum.addHeight(value.minimum), this.preferred.addHeight(value.preferred));
 }