Bug 958714 Remove obsolete assertion & comment

+ Used "mFrame->GetType()" instead of "mFrame->Type()"

layout/generic/ReflowInput.cpp

@@ -154,11 +154,6 @@ FontSizeInflationListMarginAdjustment(const nsIFrame* aFrame)
   return 0;
 }
 
-// NOTE: If we ever want to use SizeComputationInput for a flex item or a
-// grid item, we need to make it take the containing-block block-size as
-// well as the inline-size, since flex items and grid items resolve
-// block-direction percent margins and padding against the
-// containing-block block-size, rather than its inline-size.
 SizeComputationInput::SizeComputationInput(nsIFrame *aFrame,
                                    nsRenderingContext *aRenderingContext,
                                    WritingMode aContainingBlockWritingMode,
@@ -167,15 +162,9 @@ SizeComputationInput::SizeComputationInput(nsIFrame *aFrame,
   , mRenderingContext(aRenderingContext)
   , mWritingMode(aFrame->GetWritingMode())
 {
-  MOZ_ASSERT(!aFrame->IsFlexOrGridItem(),
-             "We're about to resolve percent margin & padding "
-             "values against CB inline size, which is incorrect for "
-             "flex/grid items. "
-             "Additionally for grid items, this path doesn't handle baseline "
-             "padding contribution - see SizeComputationInput::InitOffsets");
   ReflowInputFlags flags;
   InitOffsets(aContainingBlockWritingMode, aContainingBlockISize,
-              mFrame->Type(), flags);
+              mFrame->GetType(), flags);
 }
 
 // Initialize a reflow state for a child frame's reflow. Some state