Ensure that by default PDFs are opened in Chrome.

chrome/browser/download/download_target_determiner.cc

 // Copyright 2013 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/browser/download/download_target_determiner.h"
 
 #include "base/prefs/pref_service.h"
 #include "base/rand_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/time/time.h"
@@ skipping 443 matching lines @@
                               mime_type,
                               IGNORE_IF_STALE_PLUGIN_LIST,
                               callback)));
     return;
   }
   // In practice, we assume that retrying once is enough.
   DCHECK(!is_stale);
   bool is_handled_safely =
       plugin_found &&
       (plugin_info.type == WebPluginInfo::PLUGIN_TYPE_PEPPER_IN_PROCESS ||
-       plugin_info.type == WebPluginInfo::PLUGIN_TYPE_PEPPER_OUT_OF_PROCESS);
+       plugin_info.type == WebPluginInfo::PLUGIN_TYPE_PEPPER_OUT_OF_PROCESS ||
+       plugin_info.type == WebPluginInfo::PLUGIN_TYPE_BROWSER_PLUGIN);
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE, base::Bind(callback, is_handled_safely));
 }
 
 }  // namespace
 #endif  // defined(ENABLE_PLUGINS)
 
 DownloadTargetDeterminer::Result
     DownloadTargetDeterminer::DoDetermineIfHandledSafely() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
@@ skipping 416 matching lines @@
     const base::FilePath& suggested_path) {
   return base::FilePath(suggested_path.value() + kCrdownloadSuffix);
 }
 
 #if defined(OS_WIN)
 // static
 bool DownloadTargetDeterminer::IsAdobeReaderUpToDate() {
   return g_is_adobe_reader_up_to_date_;
 }
 #endif