Rename rendering/render_*.dart to rendering/*.dart

sky/sdk/lib/framework/rendering/render_block.dart

-// Copyright 2015 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.
-
-import 'dart:sky' as sky;
-import 'render_box.dart';
-import 'render_node.dart';
-
-class BlockParentData extends BoxParentData with ContainerParentDataMixin<RenderBox> { }
-
-class RenderBlock extends RenderBox with ContainerRenderNodeMixin<RenderBox, BlockParentData>,
-                                         RenderBoxContainerDefaultsMixin<RenderBox, BlockParentData> {
-  // lays out RenderBox children in a vertical stack
-  // uses the maximum width provided by the parent
-  // sizes itself to the height of its child stack
-
-  void setParentData(RenderBox child) {
-    if (child.parentData is! BlockParentData)
-      child.parentData = new BlockParentData();
-  }
-
-  // override this to report what dimensions you would have if you
-  // were laid out with the given constraints this can walk the tree
-  // if it must, but it should be as cheap as possible; just get the
-  // dimensions and nothing else (e.g. don't calculate hypothetical
-  // child positions if they're not needed to determine dimensions)
-  sky.Size getIntrinsicDimensions(BoxConstraints constraints) {
-    double height = 0.0;
-    double width = constraints.constrainWidth(constraints.maxWidth);
-    assert(width < double.INFINITY);
-    RenderBox child = firstChild;
-    BoxConstraints innerConstraints = new BoxConstraints(minWidth: width,
-                                                         maxWidth: width);
-    while (child != null) {
-      height += child.getIntrinsicDimensions(innerConstraints).height;
-      assert(child.parentData is BlockParentData);
-      child = child.parentData.nextSibling;
-    }
-
-    return new sky.Size(width, constraints.constrainHeight(height));
-  }
-
-  void performLayout() {
-    assert(constraints is BoxConstraints);
-    double width = constraints.constrainWidth(constraints.maxWidth);
-    double y = 0.0;
-    RenderBox child = firstChild;
-    while (child != null) {
-      child.layout(new BoxConstraints(minWidth: width, maxWidth: width), parentUsesSize: true);
-      assert(child.parentData is BlockParentData);
-      child.parentData.position = new sky.Point(0.0, y);
-      y += child.size.height;
-      child = child.parentData.nextSibling;
-    }
-    size = new sky.Size(width, constraints.constrainHeight(y));
-    assert(size.width < double.INFINITY);
-    assert(size.height < double.INFINITY);
-  }
-
-  void hitTestChildren(HitTestResult result, { sky.Point position }) {
-    defaultHitTestChildren(result, position: position);
-  }
-
-  void paint(RenderNodeDisplayList canvas) {
-    defaultPaint(canvas);
-  }
-
-}
-