Drop all uses of //base except ObserverList from view mgr client lib

mojo/services/view_manager/public/cpp/view_manager_context.h

Index: mojo/services/view_manager/public/cpp/view_manager_context.h
diff --git a/mojo/services/view_manager/public/cpp/view_manager_context.h b/mojo/services/view_manager/public/cpp/view_manager_context.h
index 197659885c0aa968090b426cc33cd1a07fd1e0f1..de7b84bef5d75d8b76146a571b85b47b47b1962f 100644
--- a/mojo/services/view_manager/public/cpp/view_manager_context.h
+++ b/mojo/services/view_manager/public/cpp/view_manager_context.h
@@ -8,9 +8,8 @@
 #include <string>
 #include <vector>
 
-#include "base/bind.h"
-#include "base/memory/scoped_ptr.h"
 #include "mojo/public/cpp/application/service_provider_impl.h"
+#include "mojo/public/cpp/system/macros.h"
 
 namespace mojo {
 class ApplicationImpl;
@@ -37,7 +36,7 @@ class ViewManagerContext {
 
  private:
   class InternalState;
-  scoped_ptr<InternalState> state_;
+  InternalState* state_;
 
   MOJO_DISALLOW_COPY_AND_ASSIGN(ViewManagerContext);
 };