Bug 1677284 - Remove unused includes of Variant.h. r=andi

Differential Revision: https://phabricator.services.mozilla.com/D97076

gfx/layers/AnimationHelper.h

@@ -15,7 +15,6 @@
 #include "mozilla/TimeStamp.h"                 // for TimeStamp
 #include "mozilla/TimingParams.h"
 #include "mozilla/Types.h"  // for SideBits
-#include "mozilla/Variant.h"
 #include "X11UndefineNone.h"
 #include <unordered_map>
 

gfx/layers/wr/RenderRootTypes.h

@@ -11,7 +11,6 @@
 #include "mozilla/webrender/WebRenderTypes.h"
 #include "mozilla/layers/WebRenderMessages.h"
 #include "mozilla/layers/WebRenderScrollData.h"
-#include "mozilla/Variant.h"
 
 namespace mozilla {
 

gfx/webrender_bindings/DCLayerTree.h

@@ -11,6 +11,7 @@
 #include <windows.h>
 
 #include "GLTypes.h"
+#include "mozilla/HashFunctions.h"
 #include "mozilla/Maybe.h"
 #include "mozilla/RefPtr.h"
 #include "mozilla/UniquePtr.h"

gfx/webrender_bindings/WebRenderTypes.h

@@ -19,7 +19,6 @@
 #include "mozilla/PodOperations.h"
 #include "mozilla/Range.h"
 #include "mozilla/TypeTraits.h"
-#include "mozilla/Variant.h"
 #include "Units.h"
 
 namespace mozilla {