base: Remove the string logging from CHECK().

crypto/signature_verifier_unittest.cc

Index: crypto/signature_verifier_unittest.cc
diff --git a/crypto/signature_verifier_unittest.cc b/crypto/signature_verifier_unittest.cc
index 2cda4596a10b78e0a8a70939c3d0316b7d2a67eb..685276d0516ffa746216311f77dba974cb1f780c 100644
--- a/crypto/signature_verifier_unittest.cc
+++ b/crypto/signature_verifier_unittest.cc
@@ -992,7 +992,8 @@ static void PrependASN1Length(std::vector<uint8_t>* out, size_t len) {
     out->insert(out->begin(), static_cast<uint8_t>(len >> 8));
     out->insert(out->begin(), 0x82);
   } else {
-    CHECK(false) << "ASN.1 length not handled: " << len;
+    // ASN.1 length not handled.
+    CHECK(false);
   }
 }