weaved: Rename "chromeos" -> "brillo" in include paths and namespaces

libchromeos is transitioning to libbrillo and chromeos namespaces
and include directory is changing to brillo.

Bug: 24872993
Change-Id: Ic91fe342fb2c29ae915300d1ce9ae8473303238b
diff --git a/buffet/fake_encryptor.cc b/buffet/fake_encryptor.cc
index b82b9f0..2d7e1ba 100644
--- a/buffet/fake_encryptor.cc
+++ b/buffet/fake_encryptor.cc
@@ -16,7 +16,7 @@
 
 #include <memory>
 
-#include <chromeos/data_encoding.h>
+#include <brillo/data_encoding.h>
 
 namespace buffet {
 
@@ -24,13 +24,13 @@
  public:
   bool EncryptWithAuthentication(const std::string& plaintext,
                                  std::string* ciphertext) override {
-    *ciphertext = chromeos::data_encoding::Base64Encode(plaintext);
+    *ciphertext = brillo::data_encoding::Base64Encode(plaintext);
     return true;
   }
 
   bool DecryptWithAuthentication(const std::string& ciphertext,
                                  std::string* plaintext) override {
-    return chromeos::data_encoding::Base64Decode(ciphertext, plaintext);
+    return brillo::data_encoding::Base64Decode(ciphertext, plaintext);
   }
 };