If location services are turned off, have the BT chooser prompt the user to turn them on.

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 2e555f5daecc66d3b2f6fdfedeea20178a588579..9c7a7cda798c98adf4712ed7e95e026f7563d66d 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/BluetoothChooserDialogTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/BluetoothChooserDialogTest.java
@@ -6,7 +6,10 @@ package org.chromium.chrome.browser;
 
 import android.Manifest;
 import android.app.Dialog;
+import android.content.Context;
+import android.content.Intent;
 import android.content.pm.PackageManager;
+import android.location.LocationManager;
 import android.test.MoreAsserts;
 import android.test.suitebuilder.annotation.SmallTest;
 import android.view.View;
@@ -15,6 +18,7 @@ import android.widget.ListView;
 
 import org.chromium.base.ThreadUtils;
 import org.chromium.chrome.R;
+import org.chromium.chrome.browser.preferences.LocationSettings;
 import org.chromium.chrome.test.ChromeActivityTestCaseBase;
 import org.chromium.components.security_state.ConnectionSecurityLevel;
 import org.chromium.content.browser.test.util.Criteria;
@@ -39,6 +43,7 @@ public class BluetoothChooserDialogTest extends ChromeActivityTestCaseBase<Chrom
     static class BluetoothChooserDialogWithFakeNatives extends BluetoothChooserDialog {
         int mFinishedEventType = -1;
         String mFinishedDeviceId;
+        int mRestartSearchCount = 0;
 
         BluetoothChooserDialogWithFakeNatives(WindowAndroid windowAndroid, String origin,
                 int securityLevel, long nativeBluetoothChooserDialogPtr) {
@@ -55,7 +60,9 @@ public class BluetoothChooserDialogTest extends ChromeActivityTestCaseBase<Chrom
         }
 
         @Override
-        void nativeRestartSearch(long nativeBluetoothChooserAndroid) {}
+        void nativeRestartSearch(long nativeBluetoothChooserAndroid) {
+            mRestartSearchCount++;
+        }
 
         @Override
         void nativeShowBluetoothOverviewLink(long nativeBluetoothChooserAndroid) {}
@@ -68,6 +75,7 @@ public class BluetoothChooserDialogTest extends ChromeActivityTestCaseBase<Chrom
     }
 
     private ActivityWindowAndroid mWindowAndroid;
+    private TestLocationSettings mLocationSettings;
     private BluetoothChooserDialogWithFakeNatives mChooserDialog;
 
     public BluetoothChooserDialogTest() {
@@ -79,10 +87,18 @@ public class BluetoothChooserDialogTest extends ChromeActivityTestCaseBase<Chrom
     @Override
     protected void setUp() throws Exception {
         super.setUp();
+        mLocationSettings = new TestLocationSettings(getActivity());
+        LocationSettings.setInstanceForTesting(mLocationSettings);
         mChooserDialog = createDialog();
     }
 
     @Override
+    protected void tearDown() throws Exception {
+        LocationSettings.setInstanceForTesting(null);
+        super.tearDown();
+    }
+
+    @Override
     public void startMainActivity() throws InterruptedException {
         startMainActivityOnBlankPage();
     }
@@ -140,13 +156,11 @@ public class BluetoothChooserDialogTest extends ChromeActivityTestCaseBase<Chrom
     }
 
     /**
-     * The messages include <link> ... </link> or <link1> ... </link1>, <link2> ... </link2>
-     * sections that are used to create clickable spans. For testing the messages, this function
-     * returns the raw string without the tags.
+     * The messages include <*link*> ... </*link*> sections that are used to create clickable spans.
+     * For testing the messages, this function returns the raw string without the tags.
      */
     private static String removeLinkTags(String message) {
-        return message.replaceAll("</?link1>", "").replaceAll(
-                "</?link2>", "").replaceAll("</?link>", "");
+        return message.replaceAll("</?[^>]*link[^>]*>", "");
     }
 
     @SmallTest
@@ -270,12 +284,71 @@ public class BluetoothChooserDialogTest extends ChromeActivityTestCaseBase<Chrom
             @Override
             public void run() {
                 permissionDelegate.mCallback.onRequestPermissionsResult(
-                        new String[] {Manifest.permission.ACCESS_FINE_LOCATION},
+                        new String[] {Manifest.permission.ACCESS_COARSE_LOCATION},
                         new int[] {PackageManager.PERMISSION_GRANTED});
             }
         });
 
-        assertEquals(removeLinkTags(getActivity().getString(R.string.bluetooth_adapter_off_help)),
+        assertEquals(1, mChooserDialog.mRestartSearchCount);
+        assertEquals(removeLinkTags(getActivity().getString(R.string.bluetooth_searching)),
+                statusView.getText().toString());
+
+        mChooserDialog.closeDialog();
+    }
+
+    @SmallTest
+    public void testNoLocationServices() throws InterruptedException {
+        ItemChooserDialog itemChooser = mChooserDialog.mItemChooserDialog;
+        Dialog dialog = itemChooser.getDialogForTesting();
+        assertTrue(dialog.isShowing());
+
+        final TextViewWithClickableSpans statusView =
+                (TextViewWithClickableSpans) dialog.findViewById(R.id.status);
+        final TextViewWithClickableSpans errorView =
+                (TextViewWithClickableSpans) dialog.findViewById(R.id.not_found_message);
+        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);
+
+        final TestAndroidPermissionDelegate permissionDelegate =
+                new TestAndroidPermissionDelegate();
+        mWindowAndroid.setAndroidPermissionDelegate(permissionDelegate);
+
+        // Grant permissions, and turn off location services.
+        permissionDelegate.mLocationGranted = true;
+        mLocationSettings.mSystemLocationSettingsEnabled = false;
+
+        ThreadUtils.runOnUiThreadBlocking(new Runnable() {
+            @Override
+            public void run() {
+                mChooserDialog.notifyDiscoveryState(
+                        BluetoothChooserDialog.DISCOVERY_FAILED_TO_START);
+            }
+        });
+
+        assertEquals(removeLinkTags(
+                             getActivity().getString(R.string.bluetooth_need_location_services_on)),
+                errorView.getText().toString());
+        assertEquals(removeLinkTags(getActivity().getString(
+                             R.string.bluetooth_need_location_permission_help)),
+                statusView.getText().toString());
+        assertFalse(button.isEnabled());
+        assertEquals(View.VISIBLE, errorView.getVisibility());
+        assertEquals(View.GONE, items.getVisibility());
+        assertEquals(View.GONE, progress.getVisibility());
+
+        // Turn on Location Services.
+        mLocationSettings.mSystemLocationSettingsEnabled = true;
+        ThreadUtils.runOnUiThreadBlocking(new Runnable() {
+            @Override
+            public void run() {
+                mChooserDialog.mLocationModeBroadcastReceiver.onReceive(
+                        getActivity(), new Intent(LocationManager.MODE_CHANGED_ACTION));
+            }
+        });
+
+        assertEquals(1, mChooserDialog.mRestartSearchCount);
+        assertEquals(removeLinkTags(getActivity().getString(R.string.bluetooth_searching)),
                 statusView.getText().toString());
 
         mChooserDialog.closeDialog();
@@ -310,4 +383,17 @@ public class BluetoothChooserDialogTest extends ChromeActivityTestCaseBase<Chrom
             }
         }
     }
+
+    private static class TestLocationSettings extends LocationSettings {
+        public TestLocationSettings(Context context) {
+            super(context);
+        }
+
+        public boolean mSystemLocationSettingsEnabled = true;
+
+        @Override
+        public boolean isSystemLocationSettingEnabled() {
+            return mSystemLocationSettingsEnabled;
+        }
+    }
 }