[wasm] Binary 11: AST changes.

src/wasm/ast-decoder.h

Index: src/wasm/ast-decoder.h
diff --git a/src/wasm/ast-decoder.h b/src/wasm/ast-decoder.h
index edcafa42a1a62843aebc585f9ea39d0ac308d4d4..f500959f506cc1b1d03a8887b20380aa279d87f7 100644
--- a/src/wasm/ast-decoder.h
+++ b/src/wasm/ast-decoder.h
@@ -89,10 +89,10 @@ struct GlobalIndexOperand {
   }
 };
 
-struct Block;
+struct Control;
 struct BreakDepthOperand {
   uint32_t depth;
-  Block* target;
+  Control* target;
   int length;
   inline BreakDepthOperand(Decoder* decoder, const byte* pc) {
     depth = decoder->checked_read_u32v(pc, 1, &length, "break depth");