macV2GPUSandbox: Enable by default.

Enable the Mac V2 GPU Sandbox by default.

Bug: 917445
Change-Id: I90c311663ab1a232d1669b86fef3f51d03fc1701
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2042287
Auto-Submit: Greg Kerr <kerrnel@chromium.org>
Commit-Queue: Avi Drissman <avi@chromium.org>
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Reviewed-by: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#739466}

content/public/common/content_features.cc

@@ -842,7 +842,7 @@ const base::Feature kMacSyscallSandbox{"MacSyscallSandbox",
                                        base::FEATURE_DISABLED_BY_DEFAULT};
 
 const base::Feature kMacV2GPUSandbox{"MacV2GPUSandbox",
-                                     base::FEATURE_DISABLED_BY_DEFAULT};
+                                     base::FEATURE_ENABLED_BY_DEFAULT};
 
 // Enables retrying to obtain list of available cameras on Macbooks after
 // restarting the video capture service if a previous attempt delivered zero