Add Interstitial for user consent

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

 // 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.content.Intent;
 import android.os.Build;
 
 import org.chromium.chrome.browser.ChromeActivity;
 import org.chromium.chrome.browser.share.ShareActivity;
 
 /**
  * A simple activity that allows Chrome to start the physical web sharing service.
  */
 public class PhysicalWebShareActivity extends ShareActivity {
     @Override
     protected void handleShareAction(ChromeActivity triggeringActivity) {
         String url = triggeringActivity.getActivityTab().getUrl();
 
-        Intent intent = new Intent(this, PhysicalWebBroadcastService.class);
-        intent.putExtra(PhysicalWebBroadcastService.DISPLAY_URL_KEY, url);
-        startService(intent);
+        if (!PhysicalWeb.sharingIsOptedIn()) {
+            // This shows an interstitial for the user to opt-in for sending URL to Google.
+            Intent intent = new Intent(this, PhysicalWebShareEntryActivity.class);
+            intent.putExtra(PhysicalWebShareEntryActivity.SHARING_ENTRY_URL, url);
+            triggeringActivity.startActivity(intent);
+            return;
+        }
+
+        PhysicalWebBroadcastService.startBroadcastService(url);
     }
 
     /**
      * Returns whether we should show this sharing option in the share sheet.
      * Pre-conditions for Physical Web Sharing to be enabled:
      *      Device has hardware BLE advertising capabilities.
      *      Device had Bluetooth on.
      *      Device is Marshmallow or above.
      *      Device has sharing feature enabled.
      * @return {@code true} if the feature should be enabled.
      */
     public static boolean featureIsAvailable() {
         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) return false;
         return PhysicalWeb.hasBleAdvertiseCapability() && PhysicalWeb.bluetoothIsEnabled()
                 && PhysicalWeb.sharingIsEnabled();
     }
 }