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

chrome/renderer/translate_helper.cc

 // Copyright (c) 2012 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/translate_helper.h"
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
@@ skipping 70 matching lines @@
   translation_pending_ = false;
   page_id_ = -1;
   source_lang_.clear();
   target_lang_.clear();
 }
 
 // static
 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) {
     WebString attribute = iter->getAttribute("value");
     if (attribute.isNull())  // We support both 'value' and 'content'.
       attribute = iter->getAttribute("content");
     if (attribute.isNull())
       continue;
     if (LowerCaseEqualsASCII(attribute, "notranslate"))
       return false;
   }
   return true;
 }
 
 // static
 std::string TranslateHelper::GetPageLanguageFromMetaTag(WebDocument* document) {
   // The META language tag looks like:
   // <meta http-equiv="content-language" content="en">
   // It can contain more than one language:
   // <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();
 
   // We don't expect more than one such tag. If there are several, just use the
   // first one.
   WebString attribute = meta_elements[0].getAttribute("content");
   if (attribute.isEmpty())
     return std::string();
 
@@ skipping 316 matching lines @@
   WebView* web_view = render_view()->GetWebView();
   if (!web_view) {
     // When the WebView is going away, the render view should have called
     // CancelPendingTranslation() which should have stopped any pending work, so
     // that case should not happen.
     NOTREACHED();
     return NULL;
   }
   return web_view->mainFrame();
 }