Assign "application/vnd.android.package-archive" type to APK files on ChromeOS.

net/base/mime_util_unittest.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 "base/strings/string_split.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "net/base/mime_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 10 matching lines @@
     const base::FilePath::StringType extension;
     const char* const mime_type;
     bool valid;
   } tests[] = {
     {FILE_PATH_LITERAL("png"), "image/png", true},
     {FILE_PATH_LITERAL("PNG"), "image/png", true},
     {FILE_PATH_LITERAL("css"), "text/css", true},
     {FILE_PATH_LITERAL("pjp"), "image/jpeg", true},
     {FILE_PATH_LITERAL("pjpeg"), "image/jpeg", true},
 #if defined(OS_CHROMEOS)
-    // These two are test cases for testing platform mime types on Chrome OS.
+    // These are test cases for testing platform mime types on Chrome OS.
     {FILE_PATH_LITERAL("epub"), "application/epub+zip", true},
+    {FILE_PATH_LITERAL("apk"), "application/vnd.android.package-archive", true},
+    {FILE_PATH_LITERAL("zip"), "application/zip", true},
     {FILE_PATH_LITERAL("ics"), "text/calendar", true},
 #endif
 #if defined(OS_ANDROID)
     {FILE_PATH_LITERAL("m3u8"), "application/x-mpegurl", true},
 #endif
     {FILE_PATH_LITERAL("not an extension / for sure"), "", false},
     {containsNullByte, "", false}
   };
 
   std::string mime_type;
@@ skipping 270 matching lines @@
   std::string post_data;
   AddMultipartValueForUpload("value name", "value", "boundary",
                              "content type", &post_data);
   AddMultipartValueForUpload("value name", "value", "boundary",
                              "", &post_data);
   AddMultipartFinalDelimiterForUpload("boundary", &post_data);
   EXPECT_STREQ(ref_output, post_data.c_str());
 }
 
 }  // namespace net