[Autofill] Add protobuf for Google Wallet risk parameters and a utility function for filling it out.

chrome/browser/autofill/DEPS

 include_rules = [
-  # Autofill is being made into a Browser Component, so we have these
-  # three basic rules followed by temporary exceptions.  Please don't
-  # add to the list of exceptions!
+  # Autofill is being made into a Browser Component, so we have these basic
+  # rules followed by temporary exceptions.  Please don't add to the list of
+  # exceptions!
   "-chrome/browser",
   "+chrome/browser/api",
   "+chrome/browser/autofill",
   "+chrome/browser/common",
   "+chrome/browser/ui/autofill",
 
   # Permanently-allowed DEPS beyond the standard Browser
   # Components-like DEPS above go here.
   "+third_party/libphonenumber",  # For phone number i18n.
 
@@ skipping 21 matching lines @@
     "!chrome/browser/translate/translate_manager.h",
     "!chrome/browser/webdata/autofill_web_data_service_impl.h",
     "!chrome/browser/webdata/web_data_service.h",
     "!chrome/browser/webdata/web_data_service_factory.h",
     "!chrome/browser/ui/autofill/tab_autofill_manager_delegate.h",
     "!chrome/browser/ui/browser.h",
     "!chrome/browser/ui/browser_tabstrip.h",
     "!chrome/browser/ui/browser_window.h",
   ],
 
+  # TODO(joi): Remove these dependencies once the Prefs refactoring is complete.
+  'fingerprint\.cc': [
+    "!chrome/browser/browser_process.h",
+    "!chrome/browser/prefs/pref_service.h",
+  ],
+
   # TODO(joi): May be able to get rid of the need for this by moving
   # PersonalDataManagerFactory to chrome/browser/profiles.
   'personal_data_manager_factory\.(h|cc)': [
     "!chrome/browser/profiles/profile_dependency_manager.h",
     "!chrome/browser/profiles/profile_keyed_service_factory.h",
     "!chrome/browser/profiles/profile.h",
     "!chrome/browser/webdata/web_data_service_factory.h",
   ],
 }