The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/fe510c12d470f2227b0f7c63b94633618a37c7ab

commit fe510c12d470f2227b0f7c63b94633618a37c7ab
Author: svillar <svillar@igalia.com>
Date: Thu Mar 30 15:44:58 2017

[css-grid] Improve intrinsic size computation with orthogonal flows

FrameView performs an initial pre-layout of orthogonal items so that
preferred logical widths could be computed even with orthogonal flows. The
problem is that pre-layout is done based on the render tree hierarchy
something that is not valid for grids. The reason why is not valid is
because the containers of grid items are the grid areas not the grid
container. That was causing incorrect intrinsic size computations of grid
containers with orthogonal items.

From now on we skip that pre-layout for orthogonal items and do it on demand
in the track sizing algorithm code once the grid areas (the override
containing blocks) are set. This change gives us much better results in
several cases apart from fixing some others that were plainly wrong (like
orthogonal items with percentage sizes).

BUG= 685609 

Review-Url: https://codereview.chromium.org/2698663003
Cr-Commit-Position: refs/heads/master@{#460774}

[modify] https://crrev.com/fe510c12d470f2227b0f7c63b94633618a37c7ab/third_party/WebKit/LayoutTests/fast/css-grid-layout/grid-track-sizing-with-orthogonal-flows.html
[modify] https://crrev.com/fe510c12d470f2227b0f7c63b94633618a37c7ab/third_party/WebKit/LayoutTests/fast/css-grid-layout/grid-track-sizing-with-percentages-and-orthogonal-flows.html
[modify] https://crrev.com/fe510c12d470f2227b0f7c63b94633618a37c7ab/third_party/WebKit/LayoutTests/fast/css-grid-layout/repeating-layout-must-produce-the-same-results.html
[modify] https://crrev.com/fe510c12d470f2227b0f7c63b94633618a37c7ab/third_party/WebKit/Source/core/frame/FrameView.cpp
[modify] https://crrev.com/fe510c12d470f2227b0f7c63b94633618a37c7ab/third_party/WebKit/Source/core/layout/GridTrackSizingAlgorithm.cpp
[modify] https://crrev.com/fe510c12d470f2227b0f7c63b94633618a37c7ab/third_party/WebKit/Source/core/layout/GridTrackSizingAlgorithm.h

Closing this now that it's fixed.