Add Throbber control for DOMUI. Use it everywhere in options and in Sync setup UI.

chrome/browser/dom_ui/shared_resources_data_source.cc

 // Copyright (c) 2010 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/dom_ui/shared_resources_data_source.h"
 
 #include <string>
 
 #include "app/resource_bundle.h"
 #include "base/singleton.h"
@@ skipping 14 matching lines @@
 int PathToIDR(const std::string& path) {
   int idr = -1;
   if (path == "app/resources/folder_closed.png") {
     idr = IDR_FOLDER_CLOSED;
   } else if (path == "app/resources/folder_closed_rtl.png") {
     idr = IDR_FOLDER_CLOSED_RTL;
   } else if (path == "app/resources/folder_open.png") {
     idr = IDR_FOLDER_OPEN;
   } else if (path == "app/resources/folder_open_rtl.png") {
     idr = IDR_FOLDER_OPEN_RTL;
+  } else if (path == "app/resources/throbber.png") {
+    idr = IDR_THROBBER;
   } else {
     // The name of the files in the grd list are prefixed with the following
     // directory:
     std::string key("shared/");
     key += path;
 
     for (size_t i = 0; i < kSharedResourcesSize; ++i) {
       if (kSharedResources[i].name == key) {
         idr = kSharedResources[i].value;
         break;
@@ skipping 38 matching lines @@
     const std::string& path) const {
   // Requests should not block on the disk!  On Windows this goes to the
   // registry.
   //   http://code.google.com/p/chromium/issues/detail?id=59849
   base::ThreadRestrictions::ScopedAllowIO allow_io;
 
   std::string mime_type;
   net::GetMimeTypeFromFile(FilePath().AppendASCII(path), &mime_type);
   return mime_type;
 }