[coverage] Block coverage with support for IfStatements

src/debug/debug.h

Index: src/debug/debug.h
diff --git a/src/debug/debug.h b/src/debug/debug.h
index 406e2fd1419bb979569441f1d9ebdc8d070b8424..843a8aed5c8645d5fc46dc946d25e8fe31190f69 100644
--- a/src/debug/debug.h
+++ b/src/debug/debug.h
@@ -336,6 +336,10 @@ class Debug {
   void CreateBreakInfo(Handle<SharedFunctionInfo> shared);
   Handle<DebugInfo> GetOrCreateDebugInfo(Handle<SharedFunctionInfo> shared);
 
+  void InstallCoverageInfo(Handle<SharedFunctionInfo> shared,
+                           Handle<CoverageInfo> coverage_info);
+  void RemoveAllCoverageInfos();
+
   template <typename C>
   bool CompileToRevealInnerFunctions(C* compilable);
 
@@ -513,6 +517,10 @@ class Debug {
 
   void PrintBreakLocation();
 
+  // Wraps logic for clearing and maybe freeing all debug infos.
+  typedef std::function<bool(Handle<DebugInfo>)> DebugInfoClearFunction;
+  void ClearAllDebugInfos(DebugInfoClearFunction clear_function);
+
   void RemoveBreakInfoAndMaybeFree(Handle<DebugInfo> debug_info);
   void FindDebugInfo(Handle<DebugInfo> debug_info, DebugInfoListNode** prev,
                      DebugInfoListNode** curr);