Track rename of base/ to android-base/.

Change-Id: Idf9444fece4aa89c93e15640de59a91f6e758ccf
diff --git a/base/strings.cpp b/base/strings.cpp
index d687e3c..b8775df 100644
--- a/base/strings.cpp
+++ b/base/strings.cpp
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-#include "base/strings.h"
+#include "android-base/strings.h"
 
 #include <stdlib.h>
 #include <string.h>