[ng_layout] Fix wrong percent_resolution_size

third_party/WebKit/Source/core/layout/ng/ng_constraint_space.cc

Index: third_party/WebKit/Source/core/layout/ng/ng_constraint_space.cc
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_constraint_space.cc b/third_party/WebKit/Source/core/layout/ng/ng_constraint_space.cc
index 5af006f4649233d7cc55059be4c0fa0b5c8e8fce..171252924919dce2cee4ff6c318fc4071e9f3328 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_constraint_space.cc
+++ b/third_party/WebKit/Source/core/layout/ng/ng_constraint_space.cc
@@ -52,6 +52,8 @@ NGConstraintSpace* NGConstraintSpace::CreateFromLayoutObject(
     available_logical_height =
         box.containingBlock()->availableLogicalHeightForPercentageComputation();
   }
+  NGLogicalSize percentage_size = {available_logical_width,
+                                   available_logical_height};

[cbiesinger, 2017/01/10 19:45:03]

While you're touching this, I'd also make this other change:

  NGLogicalSize available_size = percentage_size;
then in the ifs change available_size.{inline,block}_size. I think that would be
clear. It would also rename the ambiguously-named "size" variable, which is
another plus :)

[atotic, 2017/01/10 21:53:20]

done

   // When we have an override size, the available_logical_{width,height} will be
   // used as the final size of the box, so it has to include border and
   // padding.
@@ -73,7 +75,7 @@ NGConstraintSpace* NGConstraintSpace::CreateFromLayoutObject(
   auto writing_mode = FromPlatformWritingMode(box.styleRef().getWritingMode());
   return NGConstraintSpaceBuilder(writing_mode)
       .SetAvailableSize(size)
-      .SetPercentageResolutionSize(size)
+      .SetPercentageResolutionSize(percentage_size)
       .SetIsInlineDirectionTriggersScrollbar(
           box.styleRef().overflowInlineDirection() == EOverflow::Auto)
       .SetIsBlockDirectionTriggersScrollbar(