Some fixes to run unit_tests bundle on android.

chrome/browser/download/download_util.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.
 //
 // Download utility implementation
 
 #define _USE_MATH_DEFINES  // For VC++ to get M_PI. This has to be first.
 
 #include "chrome/browser/download/download_util.h"
 
@@ skipping 148 matching lines @@
 // Consider downloads 'dangerous' if they go to the home directory on Linux and
 // to the desktop on any platform.
 bool DownloadPathIsDangerous(const FilePath& download_path) {
 #if defined(OS_LINUX)
   FilePath home_dir = file_util::GetHomeDir();
   if (download_path == home_dir) {
     return true;
   }
 #endif
 
+#if defined(OS_ANDROID)
+  // Android does not have a desktop dir.
+  return false;
+#else
   FilePath desktop_dir;
   if (!PathService::Get(chrome::DIR_USER_DESKTOP, &desktop_dir)) {
     NOTREACHED();
     return false;
   }
   return (download_path == desktop_dir);
+#endif
 }
 
 // Download progress painting --------------------------------------------------
 
 // Common images used for download progress animations. We load them once the
 // first time we do a progress paint, then reuse them as they are always the
 // same.
 gfx::ImageSkia* g_foreground_16 = NULL;
 gfx::ImageSkia* g_background_16 = NULL;
 gfx::ImageSkia* g_foreground_32 = NULL;
@@ skipping 449 matching lines @@
   UMA_HISTOGRAM_ENUMERATION(
       "Download.CountsChrome", type, CHROME_DOWNLOAD_COUNT_TYPES_LAST_ENTRY);
 }
 
 void RecordDownloadSource(ChromeDownloadSource source) {
   UMA_HISTOGRAM_ENUMERATION(
       "Download.SourcesChrome", source, CHROME_DOWNLOAD_SOURCE_LAST_ENTRY);
 }
 
 }  // namespace download_util