[V8] Don't ignore sourceURL comment in inline scripts in .stack

In DevTools we've already used sourceURL in inline scripts.
This CL makes the behavior of the V8 in the same for Error.stack property and v8::StackTrace.

BUG=v8:3920
LOG=Y
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/1044173002

Cr-Commit-Position: refs/heads/master@{#27554}

src/messages.js

@@ -588,8 +588,8 @@ function ScriptLineCount() {
 
 
 /**
- * If sourceURL comment is available and script starts at zero returns sourceURL
- * comment contents. Otherwise, script name is returned. See
+ * If sourceURL comment is available returns sourceURL comment contents.
+ * Otherwise, script name is returned. See
  * http://fbug.googlecode.com/svn/branches/firebug1.1/docs/ReleaseNotes_1.1.txt
  * and Source Map Revision 3 proposal for details on using //# sourceURL and
  * deprecated //@ sourceURL comment to identify scripts that don't have name.
@@ -598,12 +598,7 @@ function ScriptLineCount() {
  * deprecated //@ sourceURL comment otherwise.
  */
 function ScriptNameOrSourceURL() {
-  if (this.line_offset > 0 || this.column_offset > 0) {
-    return this.name;
-  }
-  if (this.source_url) {
-    return this.source_url;
-  }
+  if (this.source_url) return this.source_url;
   return this.name;
 }
 

test/cctest/test-api.cc

@@ -15818,7 +15818,7 @@ void AnalyzeStackOfInlineScriptWithSourceURL(
   v8::Handle<v8::StackTrace> stackTrace = v8::StackTrace::CurrentStackTrace(
       args.GetIsolate(), 10, v8::StackTrace::kDetailed);
   CHECK_EQ(4, stackTrace->GetFrameCount());
-  v8::Handle<v8::String> url = v8_str("url");
+  v8::Handle<v8::String> url = v8_str("source_url");
   for (int i = 0; i < 3; i++) {
     v8::Handle<v8::String> name =
         stackTrace->GetFrame(i)->GetScriptNameOrSourceURL();