[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 155fd24bab4953250cb6a6670523ae4be632c9bd..7d0f84f8ff6e9036d871a709f9e545b907420d24 100644
--- a/src/interpreter/bytecode-array-builder.h
+++ b/src/interpreter/bytecode-array-builder.h
@@ -390,6 +390,9 @@ class V8_EXPORT_PRIVATE BytecodeArrayBuilder final
   // Debugger.
   BytecodeArrayBuilder& Debugger();
 
+  // Increment the block counter at the given slot (block code coverage).
+  BytecodeArrayBuilder& IncBlockCounter(int slot);
+
   // Complex flow control.
   BytecodeArrayBuilder& ForInPrepare(Register receiver,
                                      RegisterList cache_info_triple);