Bug 1541137: Add missing includes/namespaces/decls to fix non-unified build bustage in layout/generic. r=boris

Differential Revision: https://phabricator.services.mozilla.com/D25823

--HG--
extra : moz-landing-system : lando

layout/generic/ScrollAnchorContainer.cpp

@@ -10,8 +10,14 @@
 #include "mozilla/dom/Text.h"
 #include "mozilla/StaticPrefs.h"
 #include "mozilla/ToString.h"
+#include "nsBlockFrame.h"
 #include "nsGfxScrollFrame.h"
+#include "nsIFrame.h"
+#include "nsIFrameInlines.h"
 #include "nsLayoutUtils.h"
+#include "nsPlaceholderFrame.h"
+
+using namespace mozilla::dom;
 
 #define ANCHOR_LOG(...)
 // #define ANCHOR_LOG(...) printf_stderr("ANCHOR: " __VA_ARGS__)

layout/generic/ScrollAnchorContainer.h

@@ -9,7 +9,10 @@
 
 #include "nsPoint.h"
 
+class nsFrameList;
 class nsIFrame;
+class nsIScrollableFrame;
+
 namespace mozilla {
 class ScrollFrameHelper;
 }  // namespace mozilla

layout/generic/nsBulletFrame.cpp

@@ -21,6 +21,7 @@
 #include "mozilla/MathAlgorithms.h"
 #include "mozilla/Move.h"
 #include "nsCOMPtr.h"
+#include "nsCSSFrameConstructor.h"
 #include "nsFontMetrics.h"
 #include "nsGkAtoms.h"
 #include "nsGenericHTMLElement.h"