--- a/dom/base/DOMMatrix.h
+++ b/dom/base/DOMMatrix.h
@@ -11,16 +11,17 @@
 #include "nsISupports.h"
 #include "nsCycleCollectionParticipant.h"
 #include "mozilla/Attributes.h"
 #include "mozilla/ErrorResult.h"
 #include "nsCOMPtr.h"
 #include "mozilla/dom/BindingDeclarations.h"
 #include "mozilla/dom/TypedArray.h"
 #include "mozilla/gfx/Matrix.h" // for Matrix4x4
+#include "mozilla/dom/DOMPoint.h"
 
 namespace mozilla {
 namespace dom {
 
 class GlobalObject;
 class DOMMatrix;
 class DOMPoint;
 struct DOMPointInit;

--- a/dom/base/PostMessageEvent.h
+++ b/dom/base/PostMessageEvent.h
@@ -3,16 +3,17 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #ifndef mozilla_dom_PostMessageEvent_h
 #define mozilla_dom_PostMessageEvent_h
 
 #include "mozilla/dom/StructuredCloneHolder.h"
+#include "nsIDocument.h"
 #include "nsCOMPtr.h"
 #include "mozilla/RefPtr.h"
 #include "nsTArray.h"
 #include "nsThreadUtils.h"
 
 class nsGlobalWindow;
 class nsIDocument;
 class nsIPrincipal;