Revert "OOR-CORS: Disable by default on Android for safe WebView launch at M83"

This reverts commit c24f6f28.

Reason for revert: enabled back again.

Original change's description:
> OOR-CORS: Disable by default on Android for safe WebView launch at M83
> 
> Disable OOR-CORS by default on Android again to mitigate risks on
> launching the feature on WebView M83.
> 
> Bug: 1084380
> Change-Id: Idd1a1aa9ef2ce813de78fe7d6ea3d5835bf8f2e5
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2206565
> Auto-Submit: Takashi Toyoshima <toyoshim@chromium.org>
> Commit-Queue: Kinuko Yasuda <kinuko@chromium.org>
> Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#769990}

TBR=kinuko@chromium.org,toyoshim@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 1084380
Change-Id: Ia5d8477fffaa77eaf5181d8106c734f1c5529cdd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2210178Reviewed-by: Takashi Toyoshima <toyoshim@chromium.org>
Commit-Queue: Takashi Toyoshima <toyoshim@chromium.org>
Cr-Commit-Position: refs/heads/master@{#770873}

services/network/public/cpp/features.cc

@@ -32,18 +32,12 @@ const base::Feature kNetworkService {
 };
 
 // Out of Blink CORS for browsers is launched at m79 (http://crbug.com/1001450),
-// and one for WebView will be at m83 (http://crbug.com/1035763).
-// The legacy CORS will be also maintained at least until m83 for enterprise
+// and one for WebView will be at m81 (http://crbug.com/1035763).
+// The legacy CORS will be also maintained at least until m81 for enterprise
 // users. See https://sites.google.com/a/chromium.org/dev/Home/loading/oor-cors
 // for FYI Builders information.
-const base::Feature kOutOfBlinkCors {
-  "OutOfBlinkCors",
-#if defined(OS_ANDROID)
-      base::FEATURE_DISABLED_BY_DEFAULT
-#else
-      base::FEATURE_ENABLED_BY_DEFAULT
-#endif
-};
+const base::Feature kOutOfBlinkCors{"OutOfBlinkCors",
+                                    base::FEATURE_ENABLED_BY_DEFAULT};
 
 const base::Feature kReporting{"Reporting", base::FEATURE_ENABLED_BY_DEFAULT};