base: Remove the string logging from CHECK().

net/http2/hpack/tools/hpack_example.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/http2/hpack/tools/hpack_example.h"
 
 #include <ctype.h>
 
 #include "base/logging.h"
 #include "net/spdy/spdy_test_utils.h"
 
 using base::StringPiece;
 using std::string;
 
 namespace net {
 namespace test {
 namespace {
 
 void HpackExampleToStringOrDie(StringPiece example, string* output) {
   while (!example.empty()) {
     const char c0 = example[0];
     if (isxdigit(c0)) {
-      CHECK_GT(example.size(), 1u) << "Truncated hex byte?";
+      // Truncated hex byte?
+      CHECK_GT(example.size(), 1u);
       const char c1 = example[1];
-      CHECK(isxdigit(c1)) << "Found half a byte?";
+      // Found half a byte?
+      CHECK(isxdigit(c1));
       *output += a2b_hex(example.substr(0, 2).as_string().c_str());
       example.remove_prefix(2);
       continue;
     }
     if (isspace(c0)) {
       example.remove_prefix(1);
       continue;
     }
     if (example.starts_with("|")) {
       // Start of a comment. Skip to end of line or of input.
       auto pos = example.find('\n');
       if (pos == StringPiece::npos) {
         // End of input.
         break;
       }
       example.remove_prefix(pos + 1);
       continue;
     }
-    CHECK(false) << "Can't parse byte " << static_cast<int>(c0) << " (0x"
-                 << std::hex << c0 << ")"
-                 << "\nExample: " << example;
+    CHECK(false);
   }
-  CHECK_LT(0u, output->size()) << "Example is empty.";
+  // Example is empty.
+  CHECK_LT(0u, output->size());
   return;
 }
 
 }  // namespace
 
 string HpackExampleToStringOrDie(StringPiece example) {
   string output;
   HpackExampleToStringOrDie(example, &output);
   return output;
 }
 
 }  // namespace test
 }  // namespace net