Add Data Reduction Proxy card to Clank FRE in EM

chrome/android/java/src/org/chromium/chrome/browser/firstrun/DataReductionProxyFirstRunFragment.java

Index: chrome/android/java/src/org/chromium/chrome/browser/firstrun/DataReductionProxyFirstRunFragment.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/firstrun/DataReductionProxyFirstRunFragment.java b/chrome/android/java/src/org/chromium/chrome/browser/firstrun/DataReductionProxyFirstRunFragment.java
new file mode 100644
index 0000000000000000000000000000000000000000..1a5cfffb56ebbcba8e8cf662fe9065b7dde261cc
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/firstrun/DataReductionProxyFirstRunFragment.java
@@ -0,0 +1,79 @@
+// Copyright 2015 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.
+
+package org.chromium.chrome.browser.firstrun;
+
+import android.content.Context;
+import android.os.Bundle;
+import android.preference.PreferenceManager;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.Switch;
+
+import org.chromium.chrome.R;
+import org.chromium.chrome.browser.net.spdyproxy.DataReductionProxySettings;
+
+/**
+ * The First Run Experience fragment that allows the user to opt in to Data Saver.
+ */
+public class DataReductionProxyFirstRunFragment extends FirstRunPage {
+    private static final String SHARED_PREF_DISPLAYED_FRE_CARD =
+            "displayed_data_reduction_fre_card";
+
+    private Switch mEnableDataSaverSwitch;
+    private Button mNextButton;
+
+    @Override
+    public View onCreateView(
+            LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fre_data_reduction_proxy, container, false);
+    }
+
+    @Override
+    public void onViewCreated(View view, Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+
+        mEnableDataSaverSwitch = (Switch) view.findViewById(R.id.enable_data_saver_switch);
+        mNextButton = (Button) view.findViewById(R.id.next_button);
+
+        mEnableDataSaverSwitch.setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                DataReductionProxySettings.getInstance().setDataReductionProxyEnabled(
+                        v.getContext(), mEnableDataSaverSwitch.isChecked());
+            }
+        });
+
+        mNextButton.setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                advanceToNextPage();
+            }
+        });
+
+        mEnableDataSaverSwitch.setChecked(true);
+        DataReductionProxySettings.getInstance().setDataReductionProxyEnabled(
+                view.getContext(), mEnableDataSaverSwitch.isChecked());
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+        setDisplayedDataReductionFreCard(getActivity(), true);
+    }
+
+    public static boolean getDisplayedDataReductionFreCard(Context context) {
+        return PreferenceManager.getDefaultSharedPreferences(context).getBoolean(
+                SHARED_PREF_DISPLAYED_FRE_CARD, false);
+    }
+
+    private static void setDisplayedDataReductionFreCard(Context context, boolean displayed) {
+        PreferenceManager.getDefaultSharedPreferences(context).edit()
+                 .putBoolean(SHARED_PREF_DISPLAYED_FRE_CARD, displayed)
+                 .apply();
+    }
+}