Add PhysicalWebBroadcastService

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 android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
 
-import org.chromium.chrome.browser.share.ShareHelper;
-import org.chromium.chrome.browser.tab.Tab;
-import org.chromium.chrome.browser.util.IntentUtils;
+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 AppCompatActivity {
-    private static final String TAG = "PhysicalWebShareActivity";
+public class PhysicalWebShareActivity extends ShareActivity {
+    @Override
+    protected void handleShareAction(ChromeActivity triggeringActivity) {
+        String url = triggeringActivity.getActivityTab().getUrl();
 
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-
-        try {
-            Intent intent = getIntent();
-            if (intent == null) return;
-            if (!Intent.ACTION_SEND.equals(intent.getAction())) return;
-            if (!IntentUtils.safeHasExtra(getIntent(), ShareHelper.EXTRA_TASK_ID)) return;
-            handleShareAction();
-        } finally {
-            finish();
-        }
+        Intent intent = new Intent(this, PhysicalWebBroadcastService.class);
+        intent.putExtra(PhysicalWebBroadcastService.DISPLAY_URL_KEY, url);
+        startService(intent);
     }
 
-    private void handleShareAction() {
-        // TODO(iankc): implement sharing
-    }
-
-    public static boolean sharingIsEnabled(Tab currentTab) {
+    /**
+     * Pre-conditions for Physical Web Sharing to be enabled:

[cco3, 2017/03/02 23:46:07]

It be good to have a summary line before this:
"Returns whether we may show this sharing option in the share sheet."

[iankc, 2017/03/02 23:51:05]

Done.

+     *      Device is Marshmallow or above.
+     *      Device has sharing feature enabled.
+     */
+    public static boolean featureIsAvailable() {
         return PhysicalWeb.sharingIsEnabled() && Build.VERSION.SDK_INT >= Build.VERSION_CODES.M;
     }
 }