MD History: Enable by default

chrome/browser/ui/webui/md_history_ui.cc

Index: chrome/browser/ui/webui/md_history_ui.cc
diff --git a/chrome/browser/ui/webui/md_history_ui.cc b/chrome/browser/ui/webui/md_history_ui.cc
index 098c42da230a8be0f32b594f2513dcebcf5835fb..9f0820a73edda0138c407d281594e6bb48f9b562 100644
--- a/chrome/browser/ui/webui/md_history_ui.cc
+++ b/chrome/browser/ui/webui/md_history_ui.cc
@@ -141,6 +141,15 @@ bool MdHistoryUI::IsEnabled(Profile* profile) {
          !profile->IsSupervised();
 }
 
+//static

[Dan Beam, 2016/06/15 02:01:56]

nit: // static

[tsergeant, 2016/06/15 02:39:44]

Oops, done.

+void MdHistoryUI::DisableForTesting() {
+  std::unique_ptr<base::FeatureList> feature_list(new base::FeatureList);
+  feature_list->InitializeFromCommandLine(
+      std::string(), features::kMaterialDesignHistoryFeature.name);
+  base::FeatureList::ClearInstanceForTesting();
+  base::FeatureList::SetInstance(std::move(feature_list));
+}
+
 // static
 base::RefCountedMemory* MdHistoryUI::GetFaviconResourceBytes(
     ui::ScaleFactor scale_factor) {