Update woff2 to 4e698b8

third_party/woff2/src/port.h

 // Copyright 2013 Google Inc. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 // http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 //
 // Helper function for bit twiddling and macros for branch prediction.
 
 #ifndef WOFF2_PORT_H_
 #define WOFF2_PORT_H_
 
+#include <assert.h>
+
 namespace woff2 {
 
 typedef unsigned int       uint32;
 
 inline int Log2Floor(uint32 n) {
 #if defined(__GNUC__)
   return n == 0 ? -1 : 31 ^ __builtin_clz(n);
 #else
   if (n == 0)
     return -1;
@@ skipping 22 matching lines @@
 #if (__GNUC__ > 2) || (__GNUC__ == 2 && __GNUC_MINOR__ > 95) || \
     (defined(__llvm__) && __has_builtin(__builtin_expect))
 #define PREDICT_FALSE(x) (__builtin_expect(x, 0))
 #define PREDICT_TRUE(x) (__builtin_expect(!!(x), 1))
 #else
 #define PREDICT_FALSE(x) (x)
 #define PREDICT_TRUE(x) (x)
 #endif
 
 #endif  // WOFF2_PORT_H_