First pass as implementing the greasemonkey API. This patch

chrome/renderer/render_view.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/renderer/render_view.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 2396 matching lines @@
 
   return web_frame;
 }
 
 void RenderView::EvaluateScript(const std::wstring& frame_xpath,
                                 const std::wstring& script) {
   WebFrame* web_frame = GetChildFrame(frame_xpath);
   if (!web_frame)
     return;
 
-  web_frame->ExecuteJavaScript(WideToUTF8(script), GURL());
+  web_frame->ExecuteJavaScript(WideToUTF8(script),
+                               GURL(), // script url
+                               1); // base line number
 }
 
 void RenderView::OnScriptEvalRequest(const std::wstring& frame_xpath,
                                      const std::wstring& jscript) {
   EvaluateScript(frame_xpath, jscript);
 }
 
 void RenderView::OnAddMessageToConsole(const std::wstring& frame_xpath,
                                        const std::wstring& msg,
                                        ConsoleMessageLevel level) {
@@ skipping 341 matching lines @@
           template_resource_id));
 
   if (template_html.empty()) {
     NOTREACHED() << "unable to load template. ID: " << template_resource_id;
     return "";
   }
   // "t" is the id of the templates root node.
   return jstemplate_builder::GetTemplateHtml(
       template_html, &error_strings, "t");
 }