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=emircan@chromium.org

Bug: 1023677
Change-Id: I79e54ce00deeb5aa40c055633b6ace0813427643
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1927050
Auto-Submit: Ilia Samsonov <isamsonov@google.com>
Reviewed-by: Emircan Uysaler <emircan@chromium.org>
Commit-Queue: Emircan Uysaler <emircan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#717235}

content/browser/renderer_host/media/video_capture_browsertest.cc

@@ -345,7 +345,7 @@ IN_PROC_BROWSER_TEST_P(VideoCaptureBrowserTest,
   }
 }
 
-INSTANTIATE_TEST_SUITE_P(,
+INSTANTIATE_TEST_SUITE_P(All,
                          VideoCaptureBrowserTest,
                          Combine(Values(0, 1, 2),             // DeviceIndex
                                  Values(gfx::Size(640, 480),  // Resolution