[coverage] Block coverage with support for IfStatements

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 098e3f9a83e0b168f5072fbb6c9b141bfd893928..fbdc870c514f27d78a50a67438dd2b7950623730 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -9793,6 +9793,10 @@ Local<String> CpuProfileNode::GetFunctionName() const {
   }
 }
 
+int debug::Coverage::BlockData::StartOffset() const { return block_->start; }
+int debug::Coverage::BlockData::EndOffset() const { return block_->end; }
+uint32_t debug::Coverage::BlockData::Count() const { return block_->count; }
+
 int debug::Coverage::FunctionData::StartOffset() const {
   return function_->start;
 }
@@ -9805,6 +9809,15 @@ MaybeLocal<String> debug::Coverage::FunctionData::Name() const {
   return ToApiHandle<String>(function_->name);
 }
 
+size_t debug::Coverage::FunctionData::BlockCount() const {
+  return function_->blocks.size();
+}
+
+debug::Coverage::BlockData debug::Coverage::FunctionData::GetBlockData(
+    size_t i) const {
+  return BlockData(&function_->blocks.at(i));
+}
+
 Local<debug::Script> debug::Coverage::ScriptData::GetScript() const {
   return ToApiHandle<debug::Script>(script_->script);
 }