[Android] Show document mode opt-out InfoBar on selected devices.

chrome/android/java/src/org/chromium/chrome/browser/infobar/TabbedModeOptInInfoBarDelegate.java

Index: chrome/android/java/src/org/chromium/chrome/browser/infobar/TabbedModeOptInInfoBarDelegate.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/infobar/TabbedModeOptInInfoBarDelegate.java b/chrome/android/java/src/org/chromium/chrome/browser/infobar/TabbedModeOptInInfoBarDelegate.java
new file mode 100644
index 0000000000000000000000000000000000000000..713ce7763a9a2b28d32ecb52cba68c189480c40d
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/infobar/TabbedModeOptInInfoBarDelegate.java
@@ -0,0 +1,69 @@
+// 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.infobar;
+
+import android.app.Activity;
+import android.preference.PreferenceManager;
+
+import org.chromium.base.annotations.CalledByNative;
+import org.chromium.chrome.browser.ChromeActivity;
+import org.chromium.chrome.browser.document.DocumentMigrationHelper;
+import org.chromium.chrome.browser.preferences.DocumentModeManager;
+import org.chromium.chrome.browser.tab.Tab;
+import org.chromium.chrome.browser.util.FeatureUtilities;
+import org.chromium.components.variations.VariationsAssociatedData;
+
+/**
+ * Handles InfoBar requesting tabbed mode opt-in for the devices that document mode is inconvenient
+ * to use.
+ */
+public class TabbedModeOptInInfoBarDelegate {
+
+    private static final String PREF_USER_INTERACTED_TABBED_MODE_OPT_IN_INFOBAR =

[gone, 2015/11/20 19:26:14]

nit: USER_INTERACTED_WITH

[Kibeom Kim (inactive), 2015/11/20 23:13:14]

Done.

+            "user_interacted_tabbed_mode_opt_in_infobar";
+    private static final String FIELD_TRIAL_NAME = "TabbedModeOptInInfoBar";
+    private static final String FIELD_TRIAL_PARAM_ENABLED = "enabled";
+
+    private Activity mActivity;
+
+    private TabbedModeOptInInfoBarDelegate(ChromeActivity activity) {
+        mActivity = activity;
+    }
+
+    /**
+     * Show tabbed mode opt-in promotion InfoBar if all the required conditions are met.
+     * @param activity Chrome activity that will be associated with this InfoBar.
+     */
+    public static void showIfNecessary(ChromeActivity activity) {
+        if (FeatureUtilities.isDocumentMode(activity)
+                && DocumentModeManager.isDeviceTabbedModeByDefault()
+                && !PreferenceManager.getDefaultSharedPreferences(activity)
+                        .getBoolean(PREF_USER_INTERACTED_TABBED_MODE_OPT_IN_INFOBAR, false)
+                && VariationsAssociatedData
+                        .getVariationParamValue(FIELD_TRIAL_NAME, FIELD_TRIAL_PARAM_ENABLED)
+                        .equals("enabled")) {
+            TabbedModeOptInInfoBarDelegate delegate = new TabbedModeOptInInfoBarDelegate(activity);
+            delegate.nativeShowTabbedModeOptInInfoBar(activity.getActivityTab());
+        }
+    }
+
+    private void recordUserInteraction() {
+        PreferenceManager.getDefaultSharedPreferences(mActivity).edit()
+                .putBoolean(PREF_USER_INTERACTED_TABBED_MODE_OPT_IN_INFOBAR, true).commit();
+    }
+
+    @CalledByNative
+    private void accept() {
+        recordUserInteraction();
+        DocumentMigrationHelper.migrateTabs(false, mActivity, true);
+    }
+
+    @CalledByNative
+    private void cancel() {
+        recordUserInteraction();
+    }
+
+    private native long nativeShowTabbedModeOptInInfoBar(Tab tab);
+}