[Password Generation] Run the form classifier only if AutofillMetadata is enabled

components/autofill/core/browser/form_structure.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_AUTOFILL_CORE_BROWSER_FORM_STRUCTURE_H_
 #define COMPONENTS_AUTOFILL_CORE_BROWSER_FORM_STRUCTURE_H_
 
 #include <stddef.h>
 
 #include <set>
@@ skipping 70 matching lines @@
   // |rappor_service| may be null.
   static void ParseQueryResponse(std::string response,
                                  const std::vector<FormStructure*>& forms,
                                  rappor::RapporService* rappor_service);
 
   // Returns predictions using the details from the given |form_structures| and
   // their fields' predicted types.
   static std::vector<FormDataPredictions> GetFieldTypePredictions(
       const std::vector<FormStructure*>& form_structures);
 
+  // Returns whether sending autofill field metadata to the server is enabled.
+  static bool IsAutofillFieldMetadataEnabled();
+
   // The unique signature for this form, composed of the target url domain,
   // the form name, and the form field names in a 64-bit hash.
   std::string FormSignature() const;
 
   // Runs a quick heuristic to rule out forms that are obviously not
   // auto-fillable, like google/yahoo/msn search, etc.
   bool IsAutofillable() const;
 
   // Resets |autofill_count_| and counts the number of auto-fillable fields.
   // This is used when we receive server data for form fields.  At that time,
@@ skipping 214 matching lines @@
 
   // True if all form fields are password fields.
   bool all_fields_are_passwords_;
 
   DISALLOW_COPY_AND_ASSIGN(FormStructure);
 };
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CORE_BROWSER_FORM_STRUCTURE_H_