Move the user agent styles sheets to blink_resources.grd (Part 2) with Unit test support

content/test/test_webkit_platform_support.cc

Index: content/test/test_webkit_platform_support.cc
diff --git a/content/test/test_webkit_platform_support.cc b/content/test/test_webkit_platform_support.cc
index c0e3673a6d3e26b11b58e74c6620e731bef23373..c943446e888ea7f9ad19c9b0187db413eedcbc77 100644
--- a/content/test/test_webkit_platform_support.cc
+++ b/content/test/test_webkit_platform_support.cc
@@ -12,6 +12,7 @@
 #include "base/path_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/public/common/content_switches.h"
+#include "content/public/test/test_content_client_initializer.h"
 #include "content/test/mock_webclipboard_impl.h"
 #include "content/test/web_gesture_curve_mock.h"
 #include "content/test/web_layer_tree_view_impl_for_testing.h"
@@ -54,6 +55,8 @@ TestWebKitPlatformSupport::TestWebKitPlatformSupport() {
       new base::StatsTable(base::StatsTable::TableIdentifier(), 20, 200));
   base::StatsTable::set_current(stats_table_.get());
 
+  content_initializer_.reset(new content::TestContentClientInitializer());
+
   blink::initialize(this);
   blink::mainThreadIsolate()->SetCounterFunction(
       base::StatsTable::FindLocation);
@@ -163,7 +166,7 @@ blink::WebData TestWebKitPlatformSupport::loadResource(const char* name) {
         "\x82";
     return blink::WebData(red_square, arraysize(red_square));
   }
-  return blink::WebData();
+  return BlinkPlatformImpl::loadResource(name);
 }
 
 blink::WebString TestWebKitPlatformSupport::queryLocalizedString(