Add prefix to empty param tests.

googletest will no longer support empty prefix
for parameterized INSTANTIATE_TEST_SUITE_P.
Adding "All" prefix to existing empty prefix test suites.

This CL was uploaded by git cl split.

R=grt@chromium.org

Bug: 1023677
Change-Id: Iecb73bedae1c12c720687ff4bdd43cad7787409b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1926910
Auto-Submit: Ilia Samsonov <isamsonov@google.com>
Reviewed-by: Greg Thompson <grt@chromium.org>
Commit-Queue: Greg Thompson <grt@chromium.org>
Cr-Commit-Position: refs/heads/master@{#717556}

chrome/browser/ui/views/try_chrome_dialog_win/button_layout_unittest.cc

@@ -180,7 +180,7 @@ TEST_P(ButtonLayoutTest, Layout) {
 
 // Test all combinations of one or two buttons at many sizes.
 INSTANTIATE_TEST_SUITE_P(
-    ,
+    All,
     ButtonLayoutTest,
     ::testing::Combine(::testing::Values(ButtonLayoutTest::kNarrowButtonMin,
                                          ButtonLayoutTest::kNarrowButtonMid,