Introduce a single call to grab default browser on Win8 for tests.

ash/test/test_suite.h

Index: ash/test/test_suite.h
diff --git a/ash/test/test_suite.h b/ash/test/test_suite.h
index 2c13bb39120018256956b43d94f15cc3c7f7bdd9..b3864c5ba932f02f2e579a426e7e7ca878369c97 100644
--- a/ash/test/test_suite.h
+++ b/ash/test/test_suite.h
@@ -8,6 +8,10 @@
 #include "base/compiler_specific.h"
 #include "base/test/test_suite.h"
 
+#if defined(OS_WIN)
+#include "base/win/scoped_com_initializer.h"
+#endif
+
 namespace ash {
 namespace test {
 
@@ -19,6 +23,11 @@ class AuraShellTestSuite : public base::TestSuite {
   // base::TestSuite:
   virtual void Initialize() OVERRIDE;
   virtual void Shutdown() OVERRIDE;
+
+ private:
+#if defined(OS_WIN)
+  base::win::ScopedCOMInitializer com_initializer;

[grt (UTC plus 2), 2013/05/27 18:46:04]

I think it's best to follow the pattern in base/threading/thread.cc and make
this a scoped_ptr<ScopedCOMInitializer> that you instantiate in Initialize() and
reset in Shutdown().

Also add a trailing underscore to the name.

[gab, 2013/05/27 20:22:10]

Done.

+#endif
 };
 
 }  // namespace test