IWYU for gms.

This almost gets gms to be iwyu clean. The last bit is around gm.cpp
and the tracing framework and its use of atomic. Will also need a way
of keeping things from regressing, which is difficult due to needing to
do this outside-in.

Change-Id: I1393531e99da8b0f1a29f55c53c86d53f459af7d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/211593
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
diff --git a/gm/filterfastbounds.cpp b/gm/filterfastbounds.cpp
index 8b1366e..6819e9e 100644
--- a/gm/filterfastbounds.cpp
+++ b/gm/filterfastbounds.cpp
@@ -6,16 +6,35 @@
  */
 
 #include "gm/gm.h"
+#include "include/core/SkBitmap.h"
+#include "include/core/SkCanvas.h"
+#include "include/core/SkColor.h"
+#include "include/core/SkFilterQuality.h"
+#include "include/core/SkImage.h"
+#include "include/core/SkImageFilter.h"
+#include "include/core/SkMatrix.h"
+#include "include/core/SkPaint.h"
 #include "include/core/SkPath.h"
+#include "include/core/SkPicture.h"
 #include "include/core/SkPictureRecorder.h"
+#include "include/core/SkPoint.h"
+#include "include/core/SkRRect.h"
+#include "include/core/SkRect.h"
+#include "include/core/SkRefCnt.h"
+#include "include/core/SkScalar.h"
+#include "include/core/SkSize.h"
+#include "include/core/SkString.h"
 #include "include/core/SkSurface.h"
+#include "include/core/SkTypes.h"
 #include "include/effects/SkBlurImageFilter.h"
 #include "include/effects/SkDropShadowImageFilter.h"
 #include "include/effects/SkImageSource.h"
 #include "include/effects/SkOffsetImageFilter.h"
 #include "include/effects/SkPictureImageFilter.h"
 #include "include/effects/SkTileImageFilter.h"
-#include "include/utils/SkRandom.h"
+#include "include/private/SkTArray.h"
+
+#include <utility>
 
 namespace skiagm {