Bug 1686603 Part 2 - Add StyleSizeOverrides parameter to ReflowInput's constructor & co. to override data from style system data. r=dholbert

This patch adds the struct as a parameter to various functions.

The struct is cached in ReflowInput so that we don't need to pass it
down to the internal method where nsIFrame::ComputeSize() is called.

In the subsequent patches, we'll use it to revise the implementation of
flex container's flex base size resolution, and size overrides.

Differential Revision: https://phabricator.services.mozilla.com/D101793

Author: aethanyc

layout/forms/nsCheckboxRadioFrame.cpp

@@ -67,15 +67,17 @@ nscoord nsCheckboxRadioFrame::GetPrefISize(gfxContext* aRenderingContext) {
 LogicalSize nsCheckboxRadioFrame::ComputeAutoSize(
     gfxContext* aRC, WritingMode aWM, const LogicalSize& aCBSize,
     nscoord aAvailableISize, const LogicalSize& aMargin,
-    const LogicalSize& aBorderPadding, ComputeSizeFlags aFlags) {
+    const LogicalSize& aBorderPadding, const StyleSizeOverrides& aSizeOverrides,
+    ComputeSizeFlags aFlags) {
   LogicalSize size(aWM, 0, 0);
   if (!StyleDisplay()->HasAppearance()) {
     return size;
   }
 
   // Note: this call always set the BSize to NS_UNCONSTRAINEDSIZE.
   size = nsAtomicContainerFrame::ComputeAutoSize(
-      aRC, aWM, aCBSize, aAvailableISize, aMargin, aBorderPadding, aFlags);
+      aRC, aWM, aCBSize, aAvailableISize, aMargin, aBorderPadding,
+      aSizeOverrides, aFlags);
   size.BSize(aWM) = DefaultSize();
   return size;
 }

layout/forms/nsCheckboxRadioFrame.h

@@ -48,11 +48,12 @@ class nsCheckboxRadioFrame final : public nsAtomicContainerFrame,
   /**
    * Our auto size is just intrinsic width and intrinsic height.
    */
-  virtual mozilla::LogicalSize ComputeAutoSize(
+  mozilla::LogicalSize ComputeAutoSize(
       gfxContext* aRenderingContext, mozilla::WritingMode aWM,
       const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize,
       const mozilla::LogicalSize& aMargin,
       const mozilla::LogicalSize& aBorderPadding,
+      const mozilla::StyleSizeOverrides& aSizeOverrides,
       mozilla::ComputeSizeFlags aFlags) override;
 
   /**