Fixup lint flags.

The -build/include setting was masking out build/include_what_you_use. This CL
restores them, fixes any build errors, and adds NOLINT as needed. As well,
the runtime/explicit and runtime/printf flags are aslo enabled and NOLINT'd.
lint cleanups

Change-Id: Ib013b3eb29c8d0e48cad74c5df9028684130719f
Reviewed-on: https://pdfium-review.googlesource.com/2030
Reviewed-by: Tom Sepez <tsepez@chromium.org>
diff --git a/fpdfsdk/fpdfdoc.cpp b/fpdfsdk/fpdfdoc.cpp
index 401b3e4..01d9124 100644
--- a/fpdfsdk/fpdfdoc.cpp
+++ b/fpdfsdk/fpdfdoc.cpp
@@ -6,6 +6,7 @@
 
 #include "public/fpdf_doc.h"
 
+#include <memory>
 #include <set>
 
 #include "core/fpdfapi/page/cpdf_page.h"