Make DistillerPageWebContentsTest a real test that uses the distiller.

components/dom_distiller/core/page_distiller.cc

 // Copyright 2014 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 "components/dom_distiller/core/page_distiller.h"
 
 #include <map>
 
 #include "base/location.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 45 matching lines @@
 }
 
 void PageDistiller::OnExecuteJavaScriptDone(const GURL& page_url,
                                             const base::Value* value) {
   DVLOG(1) << "Distillation complete; extracting resources for "
       << page_url.spec();
 
   scoped_ptr<DistilledPageInfo> page_info(new DistilledPageInfo());
   std::string result;
   const base::ListValue* result_list = NULL;
+  bool found_content = false;
   if (!value->GetAsList(&result_list)) {
     base::MessageLoop::current()->PostTask(
         FROM_HERE,
         base::Bind(page_distiller_callback_, base::Passed(&page_info), false));
   } else {
     int i = 0;
     for (base::ListValue::const_iterator iter = result_list->begin();
          iter != result_list->end();
          ++iter, ++i) {
       std::string item;
       (*iter)->GetAsString(&item);
       // The JavaScript returns an array where the first element is the title,
       // the second element is the article content HTML, and the remaining
       // elements are image URLs referenced in the HTML.
       switch (i) {
         case 0:
           page_info->title = item;
           break;
         case 1:
           page_info->html = item;
+          found_content = true;
           break;
         case 2:
           page_info->next_page_url = item;
           break;
         case 3:
           page_info->prev_page_url = item;
           break;
         default:
-          page_info->image_urls.push_back(item);
+          GURL unvalidated_gurl(item);
+          if (!unvalidated_gurl.is_empty() && unvalidated_gurl.is_valid()) {
+            page_info->image_urls.push_back(item);
+          }
       }
     }
     base::MessageLoop::current()->PostTask(
         FROM_HERE,
-        base::Bind(page_distiller_callback_, base::Passed(&page_info), true));
+        base::Bind(page_distiller_callback_,
+                   base::Passed(&page_info),
+                   found_content));
   }
 }
 
 }  // namespace dom_distiller