Add Interstitial for user consent

chrome/android/java/src/org/chromium/chrome/browser/physicalweb/PhysicalWebShareEntryActivity.java

Index: chrome/android/java/src/org/chromium/chrome/browser/physicalweb/PhysicalWebShareEntryActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/physicalweb/PhysicalWebShareEntryActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/physicalweb/PhysicalWebShareEntryActivity.java
new file mode 100644
index 0000000000000000000000000000000000000000..17400d4a160735b209dd6c35e153f9230df09a30
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/physicalweb/PhysicalWebShareEntryActivity.java
@@ -0,0 +1,57 @@
+// 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.
+
+package org.chromium.chrome.browser.physicalweb;
+
+import android.app.Activity;
+import android.content.DialogInterface;
+import android.os.Bundle;
+import android.support.v7.app.AlertDialog;
+
+import org.chromium.chrome.R;
+
+/**
+ * Activity used to interact with user before starting Physical Web Sharing.
+ * TODO(iankc): add Bluetooth checks handling.
+ */
+public class PhysicalWebShareEntryActivity extends Activity {
+    public static final String SHARING_ENTRY_URL = "physical_web.entry.url";
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        Bundle extras = getIntent().getExtras();
+        if (extras == null) {
+            finish();
+            return;
+        }
+
+        final String url = extras.getString(SHARING_ENTRY_URL);
+        if (url == null) {
+            finish();
+            return;
+        }
+
+        new AlertDialog.Builder(this, R.style.AlertDialogTheme)
+                .setTitle(R.string.physical_web_share_entry_title)
+                .setMessage(R.string.physical_web_share_entry_message)
+                .setPositiveButton(R.string.continue_button,
+                        new DialogInterface.OnClickListener() {
+                            public void onClick(DialogInterface dialog, int which) {
+                                PhysicalWeb.setSharingOptedIn();
+                                PhysicalWebBroadcastService.startBroadcastService(url);
+                                finish();
+                            }
+                        })
+                .setNegativeButton(R.string.cancel,
+                        new DialogInterface.OnClickListener() {
+                            public void onClick(DialogInterface dialog, int which) {
+                                finish();
+                            }
+                        })
+                .setIcon(android.R.drawable.ic_dialog_info)
+                .setCancelable(false)
+                .show();
+    }
+}