[counters] Move waiting for more data from background-parsing into callbacks

src/parsing/scanner-character-streams.h

Index: src/parsing/scanner-character-streams.h
diff --git a/src/parsing/scanner-character-streams.h b/src/parsing/scanner-character-streams.h
index ac81613ab7d49a349f34de712aa0ca76e164243c..b9c28248dc209d1366a313c6ef6f6cfab809b6b7 100644
--- a/src/parsing/scanner-character-streams.h
+++ b/src/parsing/scanner-character-streams.h
@@ -12,6 +12,7 @@ namespace v8 {
 namespace internal {
 
 class Utf16CharacterStream;
+class RuntimeCallStats;
 
 class ScannerStream {
  public:
@@ -20,7 +21,8 @@ class ScannerStream {
                                    int end_pos);
   static Utf16CharacterStream* For(
       ScriptCompiler::ExternalSourceStream* source_stream,
-      ScriptCompiler::StreamedSource::Encoding encoding);
+      ScriptCompiler::StreamedSource::Encoding encoding,
+      RuntimeCallStats* stats);
 
   // For testing:
   static std::unique_ptr<Utf16CharacterStream> ForTesting(const char* data);