[rtp_rtcp] fixed namespaces lint warnings

webrtc/modules/rtp_rtcp/source/byte_io.h

 /*
  *  Copyright (c) 2013 The WebRTC 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 in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 33 matching lines @@
 
 // According to ISO C standard ISO/IEC 9899, section 6.2.6.2 (2), the three
 // representations of signed integers allowed are two's complement, one's
 // complement and sign/magnitude. We can detect which is used by looking at
 // the two last bits of -1, which will be 11 in two's complement, 10 in one's
 // complement and 01 in sign/magnitude.
 // TODO(sprang): In the unlikely event that we actually need to support a
 // platform that doesn't use two's complement, implement conversion to/from
 // wire format.
 
-namespace {
-inline void AssertTwosComplement() {
-  // Assume the if any one signed integer type is two's complement, then all
-  // other will be too.
-  static_assert(
-      (-1 & 0x03) == 0x03,
-      "Only two's complement representation of signed integers supported.");
-}
+// Assume the if any one signed integer type is two's complement, then all
+// other will be too.
+static_assert(
+    (-1 & 0x03) == 0x03,
+    "Only two's complement representation of signed integers supported.");
+
 // Plain const char* won't work for static_assert, use #define instead.
 #define kSizeErrorMsg "Byte size must be less than or equal to data type size."
-}
 
 // Utility class for getting the unsigned equivalent of a signed type.
 template <typename T>
 struct UnsignedOf;
 
 // Class for reading integers from a sequence of bytes.
 // T = type of integer, B = bytes to read, is_signed = true if signed integer.
 // If is_signed is true and B < sizeof(T), sign extension might be needed.
 template <typename T,
           unsigned int B = sizeof(T),
@@ skipping 320 matching lines @@
     data[4] = val >> 32;
     data[5] = val >> 40;
     data[6] = val >> 48;
     data[7] = val >> 56;
   }
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_RTP_RTCP_SOURCE_BYTE_IO_H_