Add SK_BEGIN_REQUIRE_DENSE / SK_END_REQUIRE_DENSE.

include/core/SkStrokeRec.h

Index: include/core/SkStrokeRec.h
diff --git a/include/core/SkStrokeRec.h b/include/core/SkStrokeRec.h
index e92cb7ca883aab61113e25dd50359748272a35a6..32e54405632fccba6b7d1d57978f115afa936255 100644
--- a/include/core/SkStrokeRec.h
+++ b/include/core/SkStrokeRec.h
@@ -12,6 +12,7 @@
 
 class SkPath;
 
+SK_BEGIN_REQUIRE_DENSE
 class SkStrokeRec {
 public:
     enum InitStyle {
@@ -118,12 +119,13 @@ private:
     // The following three members are packed together into a single u32.
     // This is to avoid unnecessary padding and ensure binary equality for
     // hashing (because the padded areas might contain garbage values).
-    // 
+    //
     // fCap and fJoin are larger than needed to avoid having to initialize
     // any pad values
     uint32_t        fCap : 16;             // SkPaint::Cap
     uint32_t        fJoin : 15;            // SkPaint::Join
     uint32_t        fStrokeAndFill : 1;    // bool
 };
+SK_END_REQUIRE_DENSE
 
 #endif