From d39b639f561abbd8dab6d6f450509769a49f6a5d Mon Sep 17 00:00:00 2001
From: Simon Giesecke <sgiesecke@mozilla.com>
Date: Wed, 15 Jul 2020 13:55:24 +0000
Subject: [PATCH] Bug 1652942 - Remove some unnecessary includes of Element.h.
 r=smaug

Depends on D83632

Differential Revision: https://phabricator.services.mozilla.com/D83633
---
 dom/base/AnonymousContent.cpp |  1 +
 dom/base/AnonymousContent.h   | 15 +++++++++++----
 dom/flex/Flex.h               |  2 +-
 dom/mathml/MathMLElement.h    |  2 --
 4 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/dom/base/AnonymousContent.cpp b/dom/base/AnonymousContent.cpp
index 71ab27968d4e..8f33408a6edc 100644
--- a/dom/base/AnonymousContent.cpp
+++ b/dom/base/AnonymousContent.cpp
@@ -8,6 +8,7 @@
 #include "mozilla/PresShell.h"
 #include "mozilla/dom/Document.h"
 #include "mozilla/dom/Element.h"
+#include "mozilla/dom/Event.h"
 #include "mozilla/dom/AnonymousContentBinding.h"
 #include "nsComputedDOMStyle.h"
 #include "nsCycleCollectionParticipant.h"
diff --git a/dom/base/AnonymousContent.h b/dom/base/AnonymousContent.h
index 211eac2c267e..77ca224b8cc3 100644
--- a/dom/base/AnonymousContent.h
+++ b/dom/base/AnonymousContent.h
@@ -7,17 +7,24 @@
 #ifndef mozilla_dom_AnonymousContent_h
 #define mozilla_dom_AnonymousContent_h
 
-#include "mozilla/dom/Element.h"
-#include "mozilla/dom/Event.h"
 #include "nsCycleCollectionParticipant.h"
-#include "nsICSSDeclaration.h"
-#include "mozilla/dom/Document.h"
+
+class nsIPrincipal;
 
 namespace mozilla {
+class ErrorResult;
+
 namespace dom {
 
+class Animation;
+class DOMRect;
+class DOMString;
 class Element;
+class Event;
+template <typename T>
+class Sequence;
 class UnrestrictedDoubleOrAnonymousKeyframeAnimationOptions;
+class UnrestrictedDoubleOrKeyframeAnimationOptions;
 
 class AnonymousContent final {
  public:
diff --git a/dom/flex/Flex.h b/dom/flex/Flex.h
index 4bec9a9ae577..27237acb3d79 100644
--- a/dom/flex/Flex.h
+++ b/dom/flex/Flex.h
@@ -7,7 +7,6 @@
 #ifndef mozilla_dom_Flex_h
 #define mozilla_dom_Flex_h
 
-#include "mozilla/dom/Element.h"
 #include "mozilla/dom/FlexBinding.h"
 #include "nsISupports.h"
 #include "nsWrapperCache.h"
@@ -17,6 +16,7 @@ class nsFlexContainerFrame;
 namespace mozilla {
 namespace dom {
 
+class Element;
 class FlexLineValues;
 
 class Flex : public nsISupports, public nsWrapperCache {
diff --git a/dom/mathml/MathMLElement.h b/dom/mathml/MathMLElement.h
index 614921d2d640..b2a990bb4b3a 100644
--- a/dom/mathml/MathMLElement.h
+++ b/dom/mathml/MathMLElement.h
@@ -8,10 +8,8 @@
 #define mozilla_dom_MathMLElement_h_
 
 #include "mozilla/Attributes.h"
-#include "mozilla/dom/Element.h"
 #include "nsMappedAttributeElement.h"
 #include "Link.h"
-#include "mozilla/dom/DOMRect.h"
 
 class nsCSSValue;