Apply automatic range checks to storage enum types across IPC.

This is part of a long-running background task to remove the remaining
uses of the unchecked IPC_ENUM_TRAITS() macro.

BUG=246708

Review URL: https://codereview.chromium.org/603673003

Cr-Commit-Position: refs/heads/master@{#296887}

content/common/fileapi/file_system_messages.h

@@ -29,7 +29,7 @@ IPC_STRUCT_TRAITS_BEGIN(storage::FileSystemInfo)
 IPC_STRUCT_TRAITS_END()
 
 IPC_ENUM_TRAITS(storage::FileSystemType)
-IPC_ENUM_TRAITS(storage::QuotaLimitType)
+IPC_ENUM_TRAITS_MAX_VALUE(storage::QuotaLimitType, storage::kQuotaLimitTypeLast)
 
 // File system messages sent from the browser to the child process.
 

storage/common/quota/quota_types.h

@@ -22,6 +22,7 @@ enum QuotaLimitType {
   kQuotaLimitTypeUnknown,
   kQuotaLimitTypeLimited,
   kQuotaLimitTypeUnlimited,
+  kQuotaLimitTypeLast = kQuotaLimitTypeUnlimited
 };
 
 }  // namespace storage