bluetooth: Implement RSSI indicator on android

chrome/android/javatests/src/org/chromium/chrome/browser/BluetoothChooserDialogTest.java

 // Copyright 2016 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;
 
 import android.Manifest;
 import android.app.Dialog;
 import android.content.Intent;
 import android.content.pm.PackageManager;
@@ skipping 196 matching lines @@
 
         TextViewWithClickableSpans statusView =
                 (TextViewWithClickableSpans) dialog.findViewById(R.id.status);
         final View items = dialog.findViewById(R.id.items);
         final Button button = (Button) dialog.findViewById(R.id.positive);
         final View progress = dialog.findViewById(R.id.progress);
 
         ThreadUtils.runOnUiThreadBlocking(new Runnable() {
             @Override
             public void run() {
-                mChooserDialog.addOrUpdateDevice("id-1", "Name 1");
-                mChooserDialog.addOrUpdateDevice("id-2", "Name 2");
+                mChooserDialog.addOrUpdateDevice("id-1", "Name 1", -1 /* No rssi */);

[juncai, 2016/08/26 19:37:48]

maybe change the comment to be something more descriptive like: "No signal
strength icon shown"?

[ortuno, 2016/09/12 05:11:28]

Done.

+                mChooserDialog.addOrUpdateDevice("id-2", "Name 2", -1 /* No rssi */);
             }
         });
 
         // After adding items to the dialog, the help message should be showing,
         // the progress spinner should disappear, the Commit button should still
         // be disabled (since nothing's selected), and the list view should
         // show.
         assertEquals(removeLinkTags(getActivity().getString(R.string.bluetooth_not_seeing_it)),
                 statusView.getText().toString());
         assertFalse(button.isEnabled());
@@ skipping 168 matching lines @@
         }
 
         public boolean mSystemLocationSettingsEnabled = true;
 
         @Override
         public boolean isSystemLocationSettingEnabled() {
             return mSystemLocationSettingsEnabled;
         }
     }
 }