base: Remove the string logging from CHECK().

chromeos/cryptohome/system_salt_getter.cc

Index: chromeos/cryptohome/system_salt_getter.cc
diff --git a/chromeos/cryptohome/system_salt_getter.cc b/chromeos/cryptohome/system_salt_getter.cc
index 45461458b5adcacefcd7a384b8f09c6101097d2e..103859be88987649d149672f04e0b9ad70c146a6 100644
--- a/chromeos/cryptohome/system_salt_getter.cc
+++ b/chromeos/cryptohome/system_salt_getter.cc
@@ -116,8 +116,8 @@ void SystemSaltGetter::Shutdown() {
 
 // static
 SystemSaltGetter* SystemSaltGetter::Get() {
-  CHECK(g_system_salt_getter)
-      << "SystemSaltGetter::Get() called before Initialize()";
+  // SystemSaltGetter::Get() called before Initialize()
+  CHECK(g_system_salt_getter);
   return g_system_salt_getter;
 }