Rewrite BrowserTest.PageLanguageDetection to use a new tab instead of the one with about:blank.

chrome/renderer/chrome_render_view_observer.cc

 // Copyright (c) 2011 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/chrome_render_view_observer.h"
 
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "chrome/common/chrome_constants.h"
@@ skipping 487 matching lines @@
     last_indexed_page_id_ = load_id;
 
   // Get the URL for this page.
   GURL url(main_frame->url());
   if (url.is_empty())
     return;
 
   // Retrieve the frame's full text.
   string16 contents;
   CaptureText(main_frame, &contents);
+  if (translate_helper_)
+    translate_helper_->PageCaptured(contents);
   if (contents.size()) {
-    if (translate_helper_)
-      translate_helper_->PageCaptured(contents);
     // Send the text to the browser for indexing (the browser might decide not
     // to index, if the URL is HTTPS for instance) and language discovery.
     Send(new ViewHostMsg_PageContents(routing_id(), url, load_id, contents));
   }
 
   // Generate the thumbnail here if the in-browser thumbnailing isn't
   // enabled. TODO(satorux): Remove this and related code once
   // crbug.com/65936 is complete.
   if (!switches::IsInBrowserThumbnailingEnabled()) {
     CaptureThumbnail();
@@ skipping 204 matching lines @@
   if (net::DataURL::Parse(url, &mime_type, &char_set, &data) && !data.empty()) {
     // Decode the favicon using WebKit's image decoder.
     webkit_glue::ImageDecoder decoder(gfx::Size(kFaviconSize, kFaviconSize));
     const unsigned char* src_data =
         reinterpret_cast<const unsigned char*>(&data[0]);
 
     return decoder.Decode(src_data, data.size());
   }
   return SkBitmap();
 }