[coverage] Block coverage with support for IfStatements

src/interpreter/bytecode-array-builder.h

Index: src/interpreter/bytecode-array-builder.h
diff --git a/src/interpreter/bytecode-array-builder.h b/src/interpreter/bytecode-array-builder.h
index cd87e94a07962bb1571a65e1c2397dc25436069f..b520501ca49f0a5e6bff32d9784a60f323636a3b 100644
--- a/src/interpreter/bytecode-array-builder.h
+++ b/src/interpreter/bytecode-array-builder.h
@@ -393,6 +393,10 @@ class V8_EXPORT_PRIVATE BytecodeArrayBuilder final
   // Debugger.
   BytecodeArrayBuilder& Debugger();
 
+  // Increment the block counter at the given slot. Used for block code coverage
+  // (go/v8-designdoc-block-code-coverage).
+  BytecodeArrayBuilder& IncBlockCounter(int slot);
+
   // Complex flow control.
   BytecodeArrayBuilder& ForInPrepare(Register receiver,
                                      RegisterList cache_info_triple);