[gn] Enable stricter build flags

src/globals.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_GLOBALS_H_
 #define V8_GLOBALS_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 1107 matching lines @@
          kind == FunctionKind::kBaseConstructor ||
          kind == FunctionKind::kDerivedConstructor ||
          kind == FunctionKind::kAsyncFunction ||
          kind == FunctionKind::kAsyncArrowFunction ||
          kind == FunctionKind::kAsyncConciseMethod;
 }
 
 
 inline bool IsArrowFunction(FunctionKind kind) {
   DCHECK(IsValidFunctionKind(kind));
-  return kind & FunctionKind::kArrowFunction;
+  return (kind & FunctionKind::kArrowFunction) != 0;
 }
 
 
 inline bool IsGeneratorFunction(FunctionKind kind) {
   DCHECK(IsValidFunctionKind(kind));
-  return kind & FunctionKind::kGeneratorFunction;
+  return (kind & FunctionKind::kGeneratorFunction) != 0;
 }
 
 inline bool IsModule(FunctionKind kind) {
   DCHECK(IsValidFunctionKind(kind));
-  return kind & FunctionKind::kModule;
+  return (kind & FunctionKind::kModule) != 0;
 }
 
 inline bool IsAsyncFunction(FunctionKind kind) {
   DCHECK(IsValidFunctionKind(kind));
-  return kind & FunctionKind::kAsyncFunction;
+  return (kind & FunctionKind::kAsyncFunction) != 0;
 }
 
 inline bool IsResumableFunction(FunctionKind kind) {
   return IsGeneratorFunction(kind) || IsAsyncFunction(kind) || IsModule(kind);
 }
 
 inline bool IsConciseMethod(FunctionKind kind) {
   DCHECK(IsValidFunctionKind(kind));
-  return kind & FunctionKind::kConciseMethod;
+  return (kind & FunctionKind::kConciseMethod) != 0;
 }
 
 inline bool IsGetterFunction(FunctionKind kind) {
   DCHECK(IsValidFunctionKind(kind));
-  return kind & FunctionKind::kGetterFunction;
+  return (kind & FunctionKind::kGetterFunction) != 0;
 }
 
 inline bool IsSetterFunction(FunctionKind kind) {
   DCHECK(IsValidFunctionKind(kind));
-  return kind & FunctionKind::kSetterFunction;
+  return (kind & FunctionKind::kSetterFunction) != 0;
 }
 
 inline bool IsAccessorFunction(FunctionKind kind) {
   DCHECK(IsValidFunctionKind(kind));
-  return kind & FunctionKind::kAccessorFunction;
+  return (kind & FunctionKind::kAccessorFunction) != 0;
 }
 
 
 inline bool IsDefaultConstructor(FunctionKind kind) {
   DCHECK(IsValidFunctionKind(kind));
-  return kind & FunctionKind::kDefaultConstructor;
+  return (kind & FunctionKind::kDefaultConstructor) != 0;
 }
 
 
 inline bool IsBaseConstructor(FunctionKind kind) {
   DCHECK(IsValidFunctionKind(kind));
-  return kind & FunctionKind::kBaseConstructor;
+  return (kind & FunctionKind::kBaseConstructor) != 0;
 }
 
 inline bool IsDerivedConstructor(FunctionKind kind) {
   DCHECK(IsValidFunctionKind(kind));
-  return kind & FunctionKind::kDerivedConstructor;
+  return (kind & FunctionKind::kDerivedConstructor) != 0;
 }
 
 
 inline bool IsClassConstructor(FunctionKind kind) {
   DCHECK(IsValidFunctionKind(kind));
-  return kind & FunctionKind::kClassConstructor;
+  return (kind & FunctionKind::kClassConstructor) != 0;
 }
 
 
 inline bool IsConstructable(FunctionKind kind, LanguageMode mode) {
   if (IsAccessorFunction(kind)) return false;
   if (IsConciseMethod(kind)) return false;
   if (IsArrowFunction(kind)) return false;
   if (IsGeneratorFunction(kind)) return false;
   if (IsAsyncFunction(kind)) return false;
   return true;
@@ skipping 135 matching lines @@
 }  // namespace internal
 }  // namespace v8
 
 // Used by js-builtin-reducer to identify whether ReduceArrayIterator() is
 // reducing a JSArray method, or a JSTypedArray method.
 enum class ArrayIteratorKind { kArray, kTypedArray };
 
 namespace i = v8::internal;
 
 #endif  // V8_GLOBALS_H_