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 198 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 Signal Strength Level */);
+                mChooserDialog.addOrUpdateDevice(
+                        "id-2", "Name 2", 1 /* Signal Strength Level: 1 */);
+                mChooserDialog.addOrUpdateDevice(
+                        "id-3", "Name 3", 2 /* Signal Strength Level: 2 */);
             }
         });
 
         // 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());
         assertEquals(View.VISIBLE, items.getVisibility());
         assertEquals(View.GONE, progress.getVisibility());
 
+        ItemChooserDialog.ItemAdapter itemAdapter =
+                mChooserDialog.mItemChooserDialog.getItemAdapterForTesting();
+
+        ItemChooserDialog.ItemChooserRow expectedItem1 =
+                new ItemChooserDialog.ItemChooserRow("id-1", "Name 1", null);
+        assertEquals(itemAdapter.getItem(0), expectedItem1);
+
+        ItemChooserDialog.ItemChooserRow expectedItem2 = new ItemChooserDialog.ItemChooserRow(
+                "id-2", "Name 2", mChooserDialog.getSignalStrengthLevelRowIcons()[1]);
+        assertEquals(itemAdapter.getItem(1), expectedItem2);
+
+        ItemChooserDialog.ItemChooserRow expectedItem3 = new ItemChooserDialog.ItemChooserRow(
+                "id-3", "Name 3", mChooserDialog.getSignalStrengthLevelRowIcons()[2]);
+        assertEquals(itemAdapter.getItem(2), expectedItem3);
+
         selectItem(mChooserDialog, 2);
 
         assertEquals(
                 BluetoothChooserDialog.DIALOG_FINISHED_SELECTED, mChooserDialog.mFinishedEventType);
         assertEquals("id-2", mChooserDialog.mFinishedDeviceId);
     }
 
     @LargeTest
     public void testNoLocationPermission() throws InterruptedException {
         ItemChooserDialog itemChooser = mChooserDialog.mItemChooserDialog;
@@ skipping 155 matching lines @@
         }
 
         public boolean mSystemLocationSettingsEnabled = true;
 
         @Override
         public boolean isSystemLocationSettingEnabled() {
             return mSystemLocationSettingsEnabled;
         }
     }
 }