Reland of Fix compiler warnings on "make android_arm"

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 894 matching lines @@
 
   kLastVariableMode = DYNAMIC_LOCAL
 };
 
 inline bool IsDynamicVariableMode(VariableMode mode) {
   return mode >= DYNAMIC && mode <= DYNAMIC_LOCAL;
 }
 
 
 inline bool IsDeclaredVariableMode(VariableMode mode) {
-  return mode >= VAR && mode <= CONST;
+  STATIC_ASSERT(VAR == 0);  // Implies that mode >= VAR.
+  return mode <= CONST;
 }
 
 
 inline bool IsLexicalVariableMode(VariableMode mode) {
   return mode >= LET && mode <= CONST;
 }
 
 
 inline bool IsImmutableVariableMode(VariableMode mode) {
   return mode == CONST || mode == CONST_LEGACY;
@@ skipping 228 matching lines @@
  public:
   enum { kNone = 0x00, kSignedSmall = 0x01, kNumber = 0x3, kAny = 0x7 };
 };
 
 }  // namespace internal
 }  // namespace v8
 
 namespace i = v8::internal;
 
 #endif  // V8_GLOBALS_H_