Bug 382917 - "Display script filename and line number in Stop Script dialog" [p=manish@flock.com (Manish Singh) r+sr=mrbkap a1.9=jst]

dom/locales/en-US/chrome/dom/dom.properties

@@ -38,6 +38,7 @@
 KillScriptTitle=Warning: Unresponsive script
 KillScriptMessage=A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete.
 KillScriptWithDebugMessage=A script on this page may be busy, or it may have stopped responding. You can stop the script now, open the script in the debugger, or let the script continue.
+KillScriptLocation=Script: %S
 StopScriptButton=Stop script
 DebugScriptButton=Debug script
 WaitForScriptButton=Continue

dom/src/base/nsJSEnvironment.cpp

@@ -938,6 +938,35 @@ nsJSContext::DOMBranchCallback(JSContext *cx, JSScript *script)
     return JS_TRUE;
   }
 
+  // Append file and line number information, if available
+  if (script) {
+    const char *filename = ::JS_GetScriptFilename(cx, script);
+    if (filename) {
+      nsXPIDLString scriptLocation;
+      NS_ConvertUTF8toUTF16 filenameUTF16(filename);
+      const PRUnichar *formatParams[] = { filenameUTF16.get() };
+      rv = bundle->FormatStringFromName(NS_LITERAL_STRING("KillScriptLocation").get(),
+                                        formatParams, 1,
+                                        getter_Copies(scriptLocation));
+
+      if (NS_SUCCEEDED(rv) && scriptLocation) {
+        msg.AppendLiteral("\n\n");
+        msg.Append(scriptLocation);
+
+        JSStackFrame *fp, *iterator = nsnull;
+        fp = ::JS_FrameIterator(cx, &iterator);
+        if (fp) {
+          jsbytecode *pc = ::JS_GetFramePC(cx, fp);
+          if (pc) {
+            PRUint32 lineno = ::JS_PCToLineNumber(cx, script, pc);
+            msg.Append(':');
+            msg.AppendInt(lineno);
+          }
+        }
+      }
+    }
+  }
+
   PRInt32 buttonPressed = 1; //In case user exits dialog by clicking X
   PRBool neverShowDlgChk = PR_FALSE;
   PRUint32 buttonFlags = (nsIPrompt::BUTTON_TITLE_IS_STRING *