OOR-CORS: Remove the out-of-blink-cors flag from chrome://flags

Now the feature is launched by default, and we do not want to
allow users to control the feature via the flag in m82.

base::Feature is still remained and command line flags work
even after this change.

Enterprise policies are also still remained in the current revision,
but will be removed behind a finch gate in m82. If there is a
serious issue for enterprise users, we may postpone the announced
policy removal.

Bug: 1053866
Change-Id: Id4abe345878a0d25e74202c3e54620616c223607
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2065255Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Commit-Queue: Takashi Toyoshima <toyoshim@chromium.org>
Cr-Commit-Position: refs/heads/master@{#743035}

chrome/browser/about_flags.cc

@@ -3141,10 +3141,6 @@ const FeatureEntry kFeatureEntries[] = {
      flag_descriptions::kEnableNetworkServiceInProcessDescription, kOsAll,
      FEATURE_VALUE_TYPE(features::kNetworkServiceInProcess)},
 
-    {"out-of-blink-cors", flag_descriptions::kEnableOutOfBlinkCorsName,
-     flag_descriptions::kEnableOutOfBlinkCorsDescription, kOsAll,
-     FEATURE_VALUE_TYPE(network::features::kOutOfBlinkCors)},
-
     {"cross-origin-isolation", flag_descriptions::kCrossOriginIsolationName,
      flag_descriptions::kCrossOriginIsolationDescription, kOsAll,
      FEATURE_VALUE_TYPE(network::features::kCrossOriginIsolation)},

chrome/browser/flag-metadata.json

@@ -2988,11 +2988,6 @@
     "owners": [ "mtlieuu", "offline-dev@chromium.org" ],
     "expiry_milestone": 76
   },
-  {
-    "name": "out-of-blink-cors",
-    "owners": [ "toyoshim" ],
-    "expiry_milestone": 82
-  },
   {
     "name": "overlay-new-layout",
     "owners": [ "donnd", "jinsukkim", "contextual-search-eng" ],

chrome/browser/flag_descriptions.cc

@@ -716,10 +716,6 @@ const char kEnablePortalsCrossOriginDescription[] =
     "Allows portals to load cross-origin URLs in addition to same-origin ones."
     " Has no effect if Portals are not enabled.";
 
-const char kEnableOutOfBlinkCorsName[] = "Out of blink CORS";
-const char kEnableOutOfBlinkCorsDescription[] =
-    "CORS handling logic is moved out of blink.";
-
 const char kCrossOriginIsolationName[] = "Cross Origin Isolation";
 const char kCrossOriginIsolationDescription[] =
     "Enable Cross Origin Opener Policy and Cross Origin Embedder Policy.";

chrome/browser/flag_descriptions.h

@@ -409,9 +409,6 @@ extern const char kEnableNetworkLoggingToFileDescription[];
 extern const char kEnableNetworkServiceInProcessName[];
 extern const char kEnableNetworkServiceInProcessDescription[];
 
-extern const char kEnableOutOfBlinkCorsName[];
-extern const char kEnableOutOfBlinkCorsDescription[];
-
 extern const char kCrossOriginIsolationName[];
 extern const char kCrossOriginIsolationDescription[];