base: Stop overloading ReadFileToString()

chrome/browser/chromeos/policy/user_cloud_policy_store_chromeos.cc

Index: chrome/browser/chromeos/policy/user_cloud_policy_store_chromeos.cc
diff --git a/chrome/browser/chromeos/policy/user_cloud_policy_store_chromeos.cc b/chrome/browser/chromeos/policy/user_cloud_policy_store_chromeos.cc
index 96e73e0f7371c34a3dbccba6e734d8e888cbd59f..369a49494216f97cfbe33ce112d0feeeaea1672d 100644
--- a/chrome/browser/chromeos/policy/user_cloud_policy_store_chromeos.cc
+++ b/chrome/browser/chromeos/policy/user_cloud_policy_store_chromeos.cc
@@ -500,7 +500,8 @@ void UserCloudPolicyStoreChromeOS::LoadPolicyKey(const base::FilePath& path,
     return;
   }
 
-  const bool read_success = base::ReadFileToString(path, key, kKeySizeLimit);
+  const bool read_success =
+      base::ReadFileToStringWithMaxSize(path, key, kKeySizeLimit);
   // If the read was successful and the file size is 0 or if the read fails
   // due to file size exceeding |kKeySizeLimit|, log error.
   if ((read_success && key->length() == 0) ||