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 6c50becdd731540b746e3eb3190da992c971b100..c6bf674ea400412d1ebc81e45b2097032c87ee6e 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/BluetoothChooserDialogTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/BluetoothChooserDialogTest.java
@@ -214,8 +214,12 @@ 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 */);
             }
         });
 
@@ -229,6 +233,31 @@ 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.ItemChooserRowIcon expectedIcon2 =
+                new ItemChooserDialog.ItemChooserRowIcon(
+                        R.drawable.ic_signal_cellular_1_bar_grey600_24dp,
+                        R.drawable.ic_signal_cellular_1_bar_white_24dp,
+                        "Signal Strength Level: 1 bar");
+        ItemChooserDialog.ItemChooserRow expectedItem2 =
+                new ItemChooserDialog.ItemChooserRow("id-2", "Name 2", expectedIcon2);
+        assertEquals(itemAdapter.getItem(1), expectedItem2);
+
+        ItemChooserDialog.ItemChooserRowIcon expectedIcon3 =
+                new ItemChooserDialog.ItemChooserRowIcon(
+                        R.drawable.ic_signal_cellular_2_bar_grey600_24dp,
+                        R.drawable.ic_signal_cellular_2_bar_white_24dp,
+                        "Signal Strength Level: 2 bars");
+        ItemChooserDialog.ItemChooserRow expectedItem3 =
+                new ItemChooserDialog.ItemChooserRow("id-3", "Name 3", expectedIcon3);
+        assertEquals(itemAdapter.getItem(2), expectedItem3);
+
         selectItem(mChooserDialog, 2);
 
         assertEquals(