WebView autofill implementation

components/autofill/android/form_data_android.h

Index: components/autofill/android/form_data_android.h
diff --git a/components/autofill/android/form_data_android.h b/components/autofill/android/form_data_android.h
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+++ b/components/autofill/android/form_data_android.h
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+// Copyright 2017 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_ANDROID_FORM_DATA_ANDROID_H_
+#define COMPONENTS_AUTOFILL_ANDROID_FORM_DATA_ANDROID_H_
+
+#include "base/android/jni_weak_ref.h"
+#include "base/android/scoped_java_ref.h"
+#include "components/autofill/core/common/form_data.h"
+
+namespace autofill {
+
+class FormFieldDataAndroid;
+
+// This class is native peer of FormData.java, to make autofill::FormData
+// available in Java.
+class FormDataAndroid {
+ public:
+  FormDataAndroid(const FormData& form);
+  virtual ~FormDataAndroid();
+
+  base::android::ScopedJavaLocalRef<jobject> GetJavaPeer();
+
+  // Get autofill values from Java side and return FormData.
+  const FormData& GetAutofillValues();
+
+  base::android::ScopedJavaLocalRef<jobject> GetNextFormFieldData(
+      JNIEnv* env,
+      const base::android::JavaParamRef<jobject>& jcaller);
+
+  // Get index of given field, return True and index of focus field if found.
+  bool GetFieldIndex(const FormFieldData& field, size_t* index);
+
+  // Get index of given field, return True and index of focus field if
+  // similar field is found. This method compares less attributes than
+  // GetFieldIndex() does, and should be used when field could be changed
+  // dynamically, but the changed has no impact on autofill purpose, e.g. css
+  // style change, see FormFieldData::SimilarFieldAs() for details.
+  bool GetSimilarFieldIndex(const FormFieldData& field, size_t* index);
+
+  // Return true if this form is similar to the given form.
+  bool SimilarFormAs(const FormData& form);
+
+  // Invoked when form field which specified by |index| is charged to new
+  // |value|.
+  void OnTextFieldDidChange(size_t index, const base::string16& value);
+
+ private:
+  FormData form_;
+  std::vector<std::unique_ptr<FormFieldDataAndroid>> fields_;
+  JavaObjectWeakGlobalRef java_ref_;
+  // keep track of index when popping up fields to Java.
+  size_t index_;
+
+  DISALLOW_COPY_AND_ASSIGN(FormDataAndroid);
+};
+
+bool RegisterFormDataAndroid(JNIEnv* env);
+
+}  // namespace autofill
+
+#endif  // COMPONENTS_AUTOFILL_ANDROID_FORM_DATA_ANDROID_H_