Ensure that password accessory test doesn't check for the native library

Currently, testSetsViewAdapterOnTabCreation fails because it reaches a
feature check which needs the native library to be loaded. This should
not happen in unit tests, so we explicitly set the feature for test for
all test cases.

Bug: 1060580
Change-Id: I688b49b0df49e7262e186bda321f221b7d62be5f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2093444Reviewed-by: Friedrich [CET] <fhorschig@chromium.org>
Commit-Queue: Ioana Pandele <ioanap@chromium.org>
Cr-Commit-Position: refs/heads/master@{#749211}

chrome/android/features/keyboard_accessory/junit/src/org/chromium/chrome/browser/keyboard_accessory/sheet_tabs/PasswordAccessorySheetControllerTest.java

@@ -75,6 +75,7 @@ public class PasswordAccessorySheetControllerTest {
 
     @Before
     public void setUp() {
+        setAutofillFeature(true);
         ShadowRecordHistogram.reset();
         MockitoAnnotations.initMocks(this);
         mocker.mock(RecordHistogramJni.TEST_HOOKS, mMockRecordHistogramNatives);