PDF: Add UMA to track embedded PDF triggered drive-by downloads.

chrome/browser/download/chrome_download_manager_delegate.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/browser/download/chrome_download_manager_delegate.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 60 matching lines @@
 #endif
 
 #if BUILDFLAG(ENABLE_EXTENSIONS)
 #include "chrome/browser/extensions/api/downloads/downloads_api.h"
 #include "chrome/browser/extensions/crx_installer.h"
 #include "chrome/browser/extensions/webstore_installer.h"
 #include "extensions/browser/notification_types.h"
 #include "extensions/common/constants.h"
 #endif
 
+#if BUILDFLAG(ENABLE_PLUGINS)
+#include "chrome/common/pdf_uma.h"
+#endif
+
 using content::BrowserThread;
 using content::DownloadItem;
 using content::DownloadManager;
 using safe_browsing::DownloadFileType;
 using safe_browsing::DownloadProtectionService;
 
 namespace {
 
 #if defined(FULL_SAFE_BROWSING)
 
@@ skipping 634 matching lines @@
 }
 
 void ChromeDownloadManagerDelegate::GetFileMimeType(
     const base::FilePath& path,
     const GetFileMimeTypeCallback& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   base::PostTaskWithTraitsAndReplyWithResult(
       FROM_HERE, {base::MayBlock()}, base::Bind(&GetMimeType, path), callback);
 }
 
+void ChromeDownloadManagerDelegate::RecordDriveByPDFDownload() const {
+#if BUILDFLAG(ENABLE_PLUGINS)
+  ReportPDFLoadStatus(TRIGGERED_DRIVE_BY_DOWNLOAD);
+#endif
+}
+
 #if defined(FULL_SAFE_BROWSING)
 void ChromeDownloadManagerDelegate::CheckClientDownloadDone(
     uint32_t download_id,
     DownloadProtectionService::DownloadCheckResult result) {
   DownloadItem* item = download_manager_->GetDownload(download_id);
   if (!item || (item->GetState() != DownloadItem::IN_PROGRESS))
     return;
 
   DVLOG(2) << __func__ << "() download = " << item->DebugString(false)
            << " verdict = " << result;
@@ skipping 117 matching lines @@
       path.MatchesExtension(FILE_PATH_LITERAL(".xht")) ||
       path.MatchesExtension(FILE_PATH_LITERAL(".xhtm")) ||
       path.MatchesExtension(FILE_PATH_LITERAL(".xhtml")) ||
       path.MatchesExtension(FILE_PATH_LITERAL(".xsl")) ||
       path.MatchesExtension(FILE_PATH_LITERAL(".xslt"))) {
     return true;
   }
 #endif
   return false;
 }