Fix gems for tests

Copied from I60bc4c3d395f9b1e3abad785f720403cc535e38e

Change-Id: I7a597adb1c16f4451af5b94c87ea5c4798217888

tests/browser/Gemfile

@@ -8,5 +8,6 @@ gem 'json'
 gem 'mediawiki-selenium'
 gem 'net-http-persistent'
 gem 'page-object'
+gem 'rest-client'
 gem 'rspec-expectations'
 gem 'syntax'

tests/browser/Gemfile.lock

@@ -22,6 +22,7 @@ GEM
     i18n (0.6.5)
     json (1.8.0)
     mediawiki-selenium (0.1.8)
+    mime-types (1.25)
     multi_json (1.8.2)
     multi_test (0.0.2)
     net-http-persistent (2.9)
@@ -31,6 +32,8 @@ GEM
       watir-webdriver (>= 0.6.4)
     page_navigation (0.9)
       data_magic (>= 0.14)
+    rest-client (1.6.7)
+      mime-types (>= 1.16)
     rspec-expectations (2.14.3)
       diff-lcs (>= 1.1.3, < 2.0)
     rubyzip (0.9.9)
@@ -54,5 +57,6 @@ DEPENDENCIES
   mediawiki-selenium
   net-http-persistent
   page-object
+  rest-client
   rspec-expectations
   syntax