Change screenshot tags from a map to a simple array of strings

Bug: None
Change-Id: Iac3de7f8dcad9692beb58ff991d1f70df8ca5eae
Reviewed-on: https://chromium-review.googlesource.com/738231
Commit-Queue: Anthony Berent <aberent@chromium.org>
Reviewed-by: Bernhard Bauer <bauerb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#524730}

chrome/android/javatests/src/org/chromium/chrome/browser/ExampleUiCaptureTest.java

@@ -55,8 +55,8 @@ public class ExampleUiCaptureTest {
     @Feature({"UiCatalogue"})
     @ScreenShooter.Directory("TabSwitcher")
     public void testCaptureTabSwitcher() throws IOException, InterruptedException {
-        mScreenShooter.shoot("NTP");
+        mScreenShooter.shoot("NTP", ScreenShooter.TagsEnum.UiCatalogueExample);
         Espresso.onView(ViewMatchers.withId(R.id.tab_switcher_button)).perform(ViewActions.click());
-        mScreenShooter.shoot("Tab switcher");
+        mScreenShooter.shoot("Tab switcher", ScreenShooter.TagsEnum.UiCatalogueExample);
     }
 }