base: Remove the string logging from CHECK().

chrome/common/extensions/api/common_extension_api_unittest.cc

Index: chrome/common/extensions/api/common_extension_api_unittest.cc
diff --git a/chrome/common/extensions/api/common_extension_api_unittest.cc b/chrome/common/extensions/api/common_extension_api_unittest.cc
index 30a7ba7a476b8689163ed6c43661ef3597c5a9cd..af240a790584450d646962b7a1f9b152d3392cbd 100644
--- a/chrome/common/extensions/api/common_extension_api_unittest.cc
+++ b/chrome/common/extensions/api/common_extension_api_unittest.cc
@@ -525,7 +525,7 @@ scoped_refptr<Extension> CreatePackagedAppWithPermissions(
   scoped_refptr<Extension> extension(Extension::Create(
       base::FilePath(), Manifest::INTERNAL, values, Extension::NO_FLAGS,
       &error));
-  CHECK(extension.get()) << error;
+  CHECK(extension.get());
   return extension;
 }
 
@@ -754,14 +754,14 @@ static const base::DictionaryValue* GetDictChecked(
     const base::DictionaryValue* dict,
     const std::string& key) {
   const base::DictionaryValue* out = nullptr;
-  CHECK(dict->GetDictionary(key, &out)) << key;
+  CHECK(dict->GetDictionary(key, &out));
   return out;
 }
 
 static std::string GetStringChecked(const base::DictionaryValue* dict,
                                     const std::string& key) {
   std::string out;
-  CHECK(dict->GetString(key, &out)) << key;
+  CHECK(dict->GetString(key, &out));
   return out;
 }