Bug 1790067 - Removed the warning about non-cell relative parts of table. r=emilio

Differential Revision: https://phabricator.services.mozilla.com/D157583

dom/locales/en-US/chrome/layout/layout_errors.properties

@@ -8,7 +8,6 @@ ImageMapCircleNegativeRadius=The “coords” attribute of the <area shape="circ
 ImageMapPolyWrongNumberOfCoords=The “coords” attribute of the <area shape="poly"> tag is not in the “x1,y1,x2,y2 …” format.
 ImageMapPolyOddNumberOfCoords=The “coords” attribute of the <area shape="poly"> tag is missing the last “y” coordinate (the correct format is “x1,y1,x2,y2 …”).
 
-TablePartRelPosWarning=Relative positioning of table rows and row groups is now supported. This site may need to be updated because it may depend on this feature having no effect.
 ScrollLinkedEffectFound3=This site appears to use a scroll-linked positioning effect. This may not work well with asynchronous panning; see https://firefox-source-docs.mozilla.org/performance/scroll-linked_effects.html for further details and to join the discussion on related tools and features!
 
 ## LOCALIZATION NOTE(CompositorAnimationWarningContentTooLargeArea):

layout/base/nsPresContext.cpp

@@ -279,7 +279,6 @@ nsPresContext::nsPresContext(dom::Document* aDocument, nsPresContextType aType)
       mCounterStylesDirty(true),
       mFontFeatureValuesDirty(true),
       mIsVisual(false),
-      mHasWarnedAboutPositionedTableParts(false),
       mHasWarnedAboutTooLargeDashedOrDottedRadius(false),
       mQuirkSheetAdded(false),
       mHadNonBlankPaint(false),

layout/base/nsPresContext.h

@@ -1068,14 +1068,6 @@ class nsPresContext : public nsISupports, public mozilla::SupportsWeakPtr {
 
   bool IsDeviceSizePageSize();
 
-  bool HasWarnedAboutPositionedTableParts() const {
-    return mHasWarnedAboutPositionedTableParts;
-  }
-
-  void SetHasWarnedAboutPositionedTableParts() {
-    mHasWarnedAboutPositionedTableParts = true;
-  }
-
   bool HasWarnedAboutTooLargeDashedOrDottedRadius() const {
     return mHasWarnedAboutTooLargeDashedOrDottedRadius;
   }
@@ -1364,8 +1356,6 @@ class nsPresContext : public nsISupports, public mozilla::SupportsWeakPtr {
 
   unsigned mIsVisual : 1;
 
-  unsigned mHasWarnedAboutPositionedTableParts : 1;
-
   unsigned mHasWarnedAboutTooLargeDashedOrDottedRadius : 1;
 
   // Have we added quirk.css to the style set?

layout/tables/nsTableFrame.cpp

@@ -250,21 +250,6 @@ bool nsTableFrame::PageBreakAfter(nsIFrame* aSourceFrame,
 
 /* static */
 void nsTableFrame::RegisterPositionedTablePart(nsIFrame* aFrame) {
-  // Supporting relative positioning for table parts other than table cells has
-  // the potential to break sites that apply 'position: relative' to those
-  // parts, expecting nothing to happen. We warn at the console to make tracking
-  // down the issue easy.
-  if (!aFrame->IsTableCellFrame()) {
-    nsIContent* content = aFrame->GetContent();
-    nsPresContext* presContext = aFrame->PresContext();
-    if (content && !presContext->HasWarnedAboutPositionedTableParts()) {
-      presContext->SetHasWarnedAboutPositionedTableParts();
-      nsContentUtils::ReportToConsole(
-          nsIScriptError::warningFlag, "Layout: Tables"_ns, content->OwnerDoc(),
-          nsContentUtils::eLAYOUT_PROPERTIES, "TablePartRelPosWarning");
-    }
-  }
-
   nsTableFrame* tableFrame = nsTableFrame::GetTableFrame(aFrame);
   MOZ_ASSERT(tableFrame, "Should have a table frame here");
   tableFrame = static_cast<nsTableFrame*>(tableFrame->FirstContinuation());