Eliminate silently letting errors pass on pak loading.

content/public/test/test_content_client_initializer.cc

Index: content/public/test/test_content_client_initializer.cc
diff --git a/content/public/test/test_content_client_initializer.cc b/content/public/test/test_content_client_initializer.cc
index 0c210d297e506d65b1bbd85f794cd14e5d5b2dd2..edf4dcad13d06dd07ef9ba957bd9d971678eda22 100644
--- a/content/public/test/test_content_client_initializer.cc
+++ b/content/public/test/test_content_client_initializer.cc
@@ -10,10 +10,14 @@
 #include "content/test/test_content_browser_client.h"
 #include "content/test/test_content_client.h"
 #include "content/test/test_render_view_host_factory.h"
+#include "ui/base/ui_base_paths.h"
 
 namespace content {
 
 TestContentClientInitializer::TestContentClientInitializer() {
+  // The TestContentClient uses content_shell.pak, so ensure the paths are set.
+  ui::RegisterPathProvider();
+
   notification_service_.reset(new NotificationServiceImpl());
 
   content_client_.reset(new TestContentClient);