Move Singleton and related structs to namespace base

components/keyed_service/content/browser_context_dependency_manager.h

Index: components/keyed_service/content/browser_context_dependency_manager.h
diff --git a/components/keyed_service/content/browser_context_dependency_manager.h b/components/keyed_service/content/browser_context_dependency_manager.h
index 4a2fdbcf0e4435a3bc7ce5e6502adb276f54816a..42173b28a0a47fa4cee9801194d792141880a1ff 100644
--- a/components/keyed_service/content/browser_context_dependency_manager.h
+++ b/components/keyed_service/content/browser_context_dependency_manager.h
@@ -11,8 +11,11 @@
 #include "components/keyed_service/core/keyed_service_export.h"
 
 class BrowserContextKeyedBaseFactory;
+
+namespace base {
 template <typename T>
 struct DefaultSingletonTraits;
+}  // namespace base

[sdefresne, 2015/08/27 15:25:11]

nit, optional: "// namespace base" not really necessary for just really short
namespace (I see that you're sometimes using "// namespace base" and sometimes
not using it, can you be consistent)

 
 namespace content {
 class BrowserContext;
@@ -80,7 +83,7 @@ class KEYED_SERVICE_EXPORT BrowserContextDependencyManager
 
  private:
   friend class BrowserContextDependencyManagerUnittests;
-  friend struct DefaultSingletonTraits<BrowserContextDependencyManager>;
+  friend struct base::DefaultSingletonTraits<BrowserContextDependencyManager>;
 
   // Helper function used by CreateBrowserContextServices[ForTest].
   void DoCreateBrowserContextServices(content::BrowserContext* context,