Introduces ActivityFactory for SampleActivity.

athena/test/sample_activity.cc

Index: athena/test/sample_activity.cc
diff --git a/athena/main/sample_activity.cc b/athena/test/sample_activity.cc
similarity index 88%
rename from athena/main/sample_activity.cc
rename to athena/test/sample_activity.cc
index 8ad23e7679d9b5d64f327dd67cde290fbfd38f80..bbdfc374dae4991f3b41fbd2149ff5e956b9fe37 100644
--- a/athena/main/sample_activity.cc
+++ b/athena/test/sample_activity.cc
@@ -2,10 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "athena/main/sample_activity.h"
+#include "athena/test/sample_activity.h"
 
 #include "ui/aura/window.h"
 
+namespace athena {
+namespace test {
+
 SampleActivity::SampleActivity(SkColor color,
                                SkColor content_color,
                                const std::string& title)
@@ -35,3 +38,6 @@ aura::Window* SampleActivity::GetNativeWindow() {
   }
   return window_.get();
 }
+
+}  // namespace test
+}  // namespace athena