On Windows. Test passes w/o --single_process; fails consistently with --single_process. Filing so I don't forget this. Perhaps there's some state not getting cleaned up between tests.

interactive_ui_tests.exe --single_process --gtest_filter=WidgetTestInteractive
.*

[46160:45472:0613/084549.116:753958625:FATAL:gl_surface_test_support.cc(30)] Check failed: kGLImplementationNone == GetGLImplementation() (0 vs. 3)
Backtrace:
        base::debug::StackTrace::StackTrace [0x00007FFF8564F745+101] (C:\src\chromium\src\base\debug\stack_trace_win.cc:286)
        base::debug::StackTrace::StackTrace [0x00007FFF8564E77F+31] (C:\src\chromium\src\base\debug\stack_trace.cc:199)
        logging::LogMessage::~LogMessage [0x00007FFF856B0626+134] (C:\src\chromium\src\base\logging.cc:593)
        gl::`anonymous namespace'::InitializeOneOffHelper [0x00007FF68FFEE841+225] (C:\src\chromium\src\ui\gl\test\gl_surface_test_support.cc:43)
        gl::GLSurfaceTestSupport::InitializeOneOff [0x00007FF68FFEE74E+14] (C:\src\chromium\src\ui\gl\test\gl_surface_test_support.cc:88)
        views::test::WidgetTestInteractive::SetUp [0x00007FF68C99A2E0+64] (C:\src\chromium\src\ui\views\widget\widget_interactive_uitest.cc:287)
        testing::internal::HandleExceptionsInMethodIfSupported<testing::Test,void> [0x00007FF68C9FCAEF+79] (C:\src\chromium\src\third_party\googletest\src\googletest\src\gtest.cc:2477)
        testing::Test::Run [0x00007FF68C9FCA17+103] (C:\src\chromium\src\third_party\googletest\src\googletest\src\gtest.cc:2489)
        testing::TestInfo::Run [0x00007FF68C9FD726+230] (C:\src\chromium\src\third_party\googletest\src\googletest\src\gtest.cc:2671)
        testing::TestCase::Run [0x00007FF68C9FE2A3+243] (C:\src\chromium\src\third_party\googletest\src\googletest\src\gtest.cc:2784)
        testing::internal::UnitTestImpl::RunAllTests [0x00007FF68CA0741D+765] (C:\src\chromium\src\third_party\googletest\src\googletest\src\gtest.cc:5046)