Make WebView keep keyboard when losing focus

content/public/android/javatests/src/org/chromium/content/browser/ContentViewCoreFocusTest.java

 // Copyright 2014 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.content.browser;
 
 import android.content.Context;
 import android.os.IBinder;
 import android.os.ResultReceiver;
 import android.test.UiThreadTest;
@@ skipping 33 matching lines @@
         }
 
         public boolean isHidden() {
             return mHidden;
         }
     }
 
     @UiThreadTest
     @RerunWithUpdatedContainerView
     @SmallTest
-    public void testHideImeOnLosingFocus() throws Throwable {
-        // Test the IME window is hidden from the content view when the content
-        // view loses its focus
+    public void testDoNotHideImeOnLosingFocus() throws Throwable {
+        // Tests that the IME window does not get hidden when the content view loses its focus.
         final ContentViewCore contentViewCore = getContentViewCore();
         final View view = contentViewCore.getContainerView();
         assertTrue(view.requestFocus());
 
         final TestInputMethodManagerWrapper immw = new TestInputMethodManagerWrapper(getActivity());
         contentViewCore.getImeAdapterForTest().setInputMethodManagerWrapperForTest(immw);
 
         immw.showSoftInput(view, 0, null);
         assertFalse(immw.isHidden());
 
         final EditText urlBox = (EditText) getActivity().findViewById(R.id.url);
 
         assertTrue(urlBox.requestFocus());
 
-        // Now another view has taken focus. The original view loses its focus
-        // and the input method window should be hidden
-        assertTrue(immw.isHidden());
+        // When another view (URL box) takes focus, we do not hide the IME window.
+        assertFalse(immw.isHidden());

[Changwan Ryu, 2016/10/19 05:10:21]

Hmm... This test depends on the real behavior of the keyboard app. Unless we
change this into CallbackHelper approach, can we just remove this file?

[yabinh, 2016/10/24 01:40:57]

Done.

     }
 }