[DevTools] Add preferred size to WebInspector.View.

Source/devtools/front_end/View.js

Index: Source/devtools/front_end/View.js
diff --git a/Source/devtools/front_end/View.js b/Source/devtools/front_end/View.js
index 628014ef822d389da600eb9b2156492cca66adbe..3d9f9f78e8851e2c31261d2f57febdb335384aa6 100644
--- a/Source/devtools/front_end/View.js
+++ b/Source/devtools/front_end/View.js
@@ -527,10 +527,12 @@ WebInspector.View.prototype = {
     /**
      * @param {number} width
      * @param {number} height
+     * @param {number=} preferredWidth
+     * @param {number=} preferredHeight
      */
-    setMinimumSize: function(width, height)
+    setMinimumSize: function(width, height, preferredWidth, preferredHeight)
     {
-        this._minimumSize = new Size(width, height);
+        this._minimumSize = new Size(width, height, preferredWidth, preferredHeight);
         this.invalidateMinimumSize();
     },
 
@@ -540,7 +542,7 @@ WebInspector.View.prototype = {
     _hasNonZeroMinimumSize: function()
     {
         var size = this.minimumSize();
-        return size.width || size.height;
+        return !!(size.width || size.height || size.preferredWidth || size.preferredHeight);
     },
 
     invalidateMinimumSize: function()
@@ -610,8 +612,7 @@ WebInspector.VBox.prototype = {
      */
     calculateMinimumSize: function()
     {
-        var width = 0;
-        var height = 0;
+        var size = new Size(0, 0);
 
         /**
          * @this {!WebInspector.View}
@@ -619,13 +620,13 @@ WebInspector.VBox.prototype = {
          */
         function updateForChild()
         {
-            var size = this.minimumSize();
-            width = Math.max(width, size.width);
-            height += size.height;
+            var childSize = this.minimumSize();
+            size = size.widthToMax(childSize);
+            size = size.addHeight(childSize);
         }
 
         this._callOnVisibleChildren(updateForChild);
-        return new Size(width, height);
+        return size;
     },
 
     __proto__: WebInspector.View.prototype
@@ -647,8 +648,7 @@ WebInspector.HBox.prototype = {
      */
     calculateMinimumSize: function()
     {
-        var width = 0;
-        var height = 0;
+        var size = new Size(0, 0);
 
         /**
          * @this {!WebInspector.View}
@@ -656,13 +656,13 @@ WebInspector.HBox.prototype = {
          */
         function updateForChild()
         {
-            var size = this.minimumSize();
-            width += size.width;
-            height = Math.max(height, size.height);
+            var childSize = this.minimumSize();
+            size = size.addWidth(childSize);
+            size = size.heightToMax(childSize);
         }
 
         this._callOnVisibleChildren(updateForChild);
-        return new Size(width, height);
+        return size;
     },
 
     __proto__: WebInspector.View.prototype