Add support for non-all-lower-case meta tags.

chrome/renderer/translate_helper.cc

Index: chrome/renderer/translate_helper.cc
diff --git a/chrome/renderer/translate_helper.cc b/chrome/renderer/translate_helper.cc
index fcbc3c7bd5cee7a114f82532a5b62581e5b1f55a..5668f7d5672981efa44197699d79ea5896dc017f 100644
--- a/chrome/renderer/translate_helper.cc
+++ b/chrome/renderer/translate_helper.cc
@@ -88,8 +88,8 @@ void TranslateHelper::CancelPendingTranslation() {
 bool TranslateHelper::IsPageTranslatable(WebDocument* document) {
   std::vector<WebElement> meta_elements;
   webkit_glue::GetMetaElementsWithAttribute(document,
-                                            ASCIIToUTF16("name"),
-                                            ASCIIToUTF16("google"),
+                                            "name",
+                                            "google",
                                             &meta_elements);
   std::vector<WebElement>::const_iterator iter;
   for (iter = meta_elements.begin(); iter != meta_elements.end(); ++iter) {
@@ -112,8 +112,8 @@ std::string TranslateHelper::GetPageLanguageFromMetaTag(WebDocument* document) {
   // <meta http-equiv="content-language" content="en, fr">
   std::vector<WebElement> meta_elements;
   webkit_glue::GetMetaElementsWithAttribute(document,
-                                            ASCIIToUTF16("http-equiv"),
-                                            ASCIIToUTF16("content-language"),
+                                            "http-equiv",
+                                            "content-language",
                                             &meta_elements);
   if (meta_elements.empty())
     return std::string();