bluetooth: Implement RSSI indicator on android

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

Index: chrome/android/javatests/src/org/chromium/chrome/browser/BluetoothChooserDialogTest.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/BluetoothChooserDialogTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/BluetoothChooserDialogTest.java
index 3c35e6deed2171c2ae24cfcf0190d883d7a8376c..f841864221bf9229e14abedb654ae1d3f3fec2e5 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/BluetoothChooserDialogTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/BluetoothChooserDialogTest.java
@@ -216,8 +216,12 @@ public class BluetoothChooserDialogTest extends ChromeActivityTestCaseBase<Chrom
         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 */);
             }
         });
 
@@ -231,6 +235,21 @@ public class BluetoothChooserDialogTest extends ChromeActivityTestCaseBase<Chrom
         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(