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/javascript/JS_Runtime_Stub.cpp b/fpdfsdk/javascript/JS_Runtime_Stub.cpp
index 1daee4d..96148d8 100644
--- a/fpdfsdk/javascript/JS_Runtime_Stub.cpp
+++ b/fpdfsdk/javascript/JS_Runtime_Stub.cpp
@@ -120,7 +120,7 @@
 
 class CJS_RuntimeStub final : public IJS_Runtime {
  public:
-  CJS_RuntimeStub(CPDFSDK_FormFillEnvironment* pFormFillEnv)
+  explicit CJS_RuntimeStub(CPDFSDK_FormFillEnvironment* pFormFillEnv)
       : m_pFormFillEnv(pFormFillEnv) {}
   ~CJS_RuntimeStub() override {}