aw: Enable AwFormDatabaseServiceTest

Bug: 287726
Change-Id: I521fad3c7ca7b77aff23b4b4d1a609b8efefcd40
Reviewed-on: https://chromium-review.googlesource.com/568793
Commit-Queue: Shimi Zhang <ctzsm@chromium.org>
Reviewed-by: Selim Gurun <sgurun@chromium.org>
Cr-Commit-Position: refs/heads/master@{#486227}

android_webview/browser/aw_form_database_service_unittest.cc

@@ -49,9 +49,7 @@ class AwFormDatabaseServiceTest : public Test {
   std::unique_ptr<AwFormDatabaseService> service_;
 };
 
-// Disabling this test until we know why it crashes.
-// TODO(sgurun): See http://crbug.com/287726 for details.
-TEST_F(AwFormDatabaseServiceTest, DISABLED_HasAndClearFormData) {
+TEST_F(AwFormDatabaseServiceTest, HasAndClearFormData) {
   EXPECT_FALSE(service_->HasFormData());
   std::vector<FormFieldData> fields;
   FormFieldData field;