Add new user script injection point: document_idle.

chrome/browser/extensions/user_script_master.cc

 // Copyright (c) 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/browser/extensions/user_script_master.h"
 
 #include <string>
 #include <vector>
 
 #include "base/file_path.h"
@@ skipping 148 matching lines @@
     if (!file_util::DirectoryExists(script_dir))
       file_util::CreateDirectory(script_dir);
 
     file_util::FileEnumerator enumerator(script_dir, false,
                                          file_util::FileEnumerator::FILES,
                                          FILE_PATH_LITERAL("*.user.js"));
     for (FilePath file = enumerator.Next(); !file.value().empty();
          file = enumerator.Next()) {
       result->push_back(UserScript());
       UserScript& user_script = result->back();
+
+      // We default standalone user scripts to document-end for better
+      // Greasemonkey compatibility.
+      user_script.set_run_location(UserScript::DOCUMENT_END);
+
       // Push single js file in this UserScript.
       GURL url(std::string(chrome::kUserScriptScheme) + ":/" +
           net::FilePathToFileURL(file).ExtractFileName());
       user_script.js_scripts().push_back(UserScript::File(
           script_dir, file.BaseName(), url));
       UserScript::File& script_file = user_script.js_scripts().back();
       if (!LoadScriptContent(&script_file))
         result->pop_back();
       else
         ParseMetadataHeader(script_file.GetContent(), &user_script);
@@ skipping 199 matching lines @@
       DCHECK(false);
   }
 }
 
 void UserScriptMaster::StartScan() {
   if (!script_reloader_)
     script_reloader_ = new ScriptReloader(this);
 
   script_reloader_->StartScan(worker_loop_, user_script_dir_, lone_scripts_);
 }