Correct const accessors in base/values.(h|cc), Part II (ListValue)

chrome/renderer/chrome_mock_render_thread.cc

Index: chrome/renderer/chrome_mock_render_thread.cc
diff --git a/chrome/renderer/chrome_mock_render_thread.cc b/chrome/renderer/chrome_mock_render_thread.cc
index fc5a6eb444b9ed7817555e04967592fe7e37d206..b946dd625d47da8c98b48c4b2e0813535a23d53c 100644
--- a/chrome/renderer/chrome_mock_render_thread.cc
+++ b/chrome/renderer/chrome_mock_render_thread.cc
@@ -167,7 +167,7 @@ void ChromeMockRenderThread::OnUpdatePrintSettings(
     printing::PageRanges new_ranges;
     if (job_settings.GetList(printing::kSettingPageRange, &page_range_array)) {
       for (size_t index = 0; index < page_range_array->GetSize(); ++index) {
-        base::DictionaryValue* dict;
+        const base::DictionaryValue* dict;
         if (!page_range_array->GetDictionary(index, &dict))
           continue;
         printing::PageRange range;