Bitmap.asImage()

... and lots and lots of IWYU

Change-Id: Ie5157dcdd2e6d29b95c71b39153278ab48ef4eb3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/346778
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
diff --git a/bench/DisplacementBench.cpp b/bench/DisplacementBench.cpp
index 2e38696..991bfac 100644
--- a/bench/DisplacementBench.cpp
+++ b/bench/DisplacementBench.cpp
@@ -6,6 +6,7 @@
  */
 
 #include "bench/Benchmark.h"
+#include "include/core/SkBitmap.h"
 #include "include/core/SkCanvas.h"
 #include "include/core/SkFont.h"
 #include "include/core/SkSurface.h"