[profiler] Log code-source-info for each function

We were returning too early. Don't double-log the script, but log all
source-code-infos within it.

Bug: v8:7018
Change-Id: Icd29905ee1ae3444e30760cae0b0a18b55440335
Reviewed-on: https://chromium-review.googlesource.com/808165Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Franziska Hinkelmann <franzih@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49861}

src/log.cc

@@ -1049,10 +1049,7 @@ void Logger::CodeCreateEvent(CodeEventListener::LogEventsAndTags tag,
   // Make sure the script is written to the log file.
   Script* script = Script::cast(script_object);
   int script_id = script->id();
-  if (logged_source_code_.find(script_id) != logged_source_code_.end()) {
-    return;
-  }
-
+  if (logged_source_code_.find(script_id) == logged_source_code_.end()) {
     // This script has not been logged yet.
     logged_source_code_.insert(script_id);
     Object* source_object = script->source();
@@ -1071,6 +1068,7 @@ void Logger::CodeCreateEvent(CodeEventListener::LogEventsAndTags tag,
       msg << source_code;
       msg.WriteToLogFile();
     }
+  }
 
   // We log source code information in the form:
   //