Load devtools files from resources.pak rather than from disk take 2.

chrome/test/unit/chrome_test_suite.cc

Index: chrome/test/unit/chrome_test_suite.cc
diff --git a/chrome/test/unit/chrome_test_suite.cc b/chrome/test/unit/chrome_test_suite.cc
index 7fbc48be193bc3f4e8ed83f8370618f918393dab..f8eaf48c51510165b74199aa7a82e28399075f1a 100644
--- a/chrome/test/unit/chrome_test_suite.cc
+++ b/chrome/test/unit/chrome_test_suite.cc
@@ -126,6 +126,11 @@ void ChromeTestSuite::Initialize() {
   // Force unittests to run using en-US so if we test against string
   // output, it'll pass regardless of the system language.
   ResourceBundle::InitSharedInstance("en-US");
+  FilePath resources_pack_path;
+  PathService::Get(base::DIR_MODULE, &resources_pack_path);
+  resources_pack_path =
+      resources_pack_path.Append(FILE_PATH_LITERAL("resources.pak"));
+  ResourceBundle::AddDataPackToSharedInstance(resources_pack_path);
 
   // initialize the global StatsTable for unit_tests (make sure the file
   // doesn't exist before opening it so the test gets a clean slate)