base: Remove the string logging from CHECK().

tools/gn/ninja_binary_target_writer.cc

 // Copyright (c) 2013 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 "tools/gn/ninja_binary_target_writer.h"
 
 #include <stddef.h>
 #include <string.h>
 
 #include <cstring>
@@ skipping 386 matching lines @@
   }
   if (used_types.Get(SOURCE_MM)) {
     WriteOneFlag(SUBSTITUTION_CFLAGS_OBJCC, has_precompiled_headers,
                  Toolchain::TYPE_OBJCXX, &ConfigValues::cflags_objcc, opts);
   }
 
   WriteSharedVars(subst);
 }
 
 OutputFile NinjaBinaryTargetWriter::WriteInputsStampAndGetDep() const {
-  CHECK(target_->toolchain())
-      << "Toolchain not set on target "
-      << target_->label().GetUserVisibleName(true);
+  // Toolchain not set on target |target_->label().GetUserVisibleName(true)|.
+  CHECK(target_->toolchain());
 
   if (target_->inputs().size() == 0)
     return OutputFile();  // No inputs
 
   // If we only have one input, return it directly instead of writing a stamp
   // file for it.
   if (target_->inputs().size() == 1)
     return OutputFile(settings_->build_settings(), target_->inputs()[0]);
 
   // Make a stamp file.
@@ skipping 648 matching lines @@
           "\n"
           "In the latter case, either rename one of the files or move one of\n"
           "the sources to a separate source_set to avoid them both being in\n"
           "the same target.");
       g_scheduler->FailWithError(err);
       return false;
     }
   }
   return true;
 }