IWYU -- SkShader.h

Bug: skia:
Change-Id: I57bffc14c4888627a22158e35f3ac3b762138f02
Reviewed-on: https://skia-review.googlesource.com/98520
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
diff --git a/samplecode/SampleHairModes.cpp b/samplecode/SampleHairModes.cpp
index dfe7572..320cb0c 100644
--- a/samplecode/SampleHairModes.cpp
+++ b/samplecode/SampleHairModes.cpp
@@ -7,6 +7,7 @@
 
 #include "SampleCode.h"
 #include "SkView.h"
+#include "SkBitmap.h"
 #include "SkCanvas.h"
 #include "SkColorPriv.h"
 #include "SkShader.h"