Origin Policy: Cleanup: Remove runtime-enabled switch.

The previous implementation used both a --feature-enabled and a
--runtime-feature-enabled switch, initializing the latter based on the former,
presumably because it had components in both browser and Blink.
That's redundant.

The current implementation uses the browser switch. All Blink-resident parts
of the code act on whether they receive a policy or not (which would be always
false if the browser switch isn't set).

Bug: 751996
Change-Id: I81f10cc888fd7c29c6c93e727526863216ca6f02
Reviewed-on: https://chromium-review.googlesource.com/1165351Reviewed-by: Mike West <mkwst@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Daniel Vogelheim <vogelheim@chromium.org>
Cr-Commit-Position: refs/heads/master@{#583679}

content/child/runtime_features.cc

@@ -343,9 +343,6 @@ void SetRuntimeFeaturesDefaultsAndUpdateFromArgs(
   if (base::FeatureList::IsEnabled(network::features::kOutOfBlinkCORS))
     WebRuntimeFeatures::EnableOutOfBlinkCORS(true);
 
-  if (base::FeatureList::IsEnabled(features::kOriginPolicy))
-    WebRuntimeFeatures::EnableOriginPolicy(true);
-
   WebRuntimeFeatures::EnableMediaCastOverlayButton(
       base::FeatureList::IsEnabled(media::kMediaCastOverlayButton));
 

third_party/blink/public/platform/web_runtime_features.h

@@ -117,7 +117,6 @@ class WebRuntimeFeatures {
   BLINK_PLATFORM_EXPORT static void EnableNotifications(bool);
   BLINK_PLATFORM_EXPORT static void EnableOnDeviceChange(bool);
   BLINK_PLATFORM_EXPORT static void EnableOrientationEvent(bool);
-  BLINK_PLATFORM_EXPORT static void EnableOriginPolicy(bool);
   BLINK_PLATFORM_EXPORT static void EnableOverflowIconsForMediaControls(bool);
   BLINK_PLATFORM_EXPORT static void EnableOverlayScrollbars(bool);
   BLINK_PLATFORM_EXPORT static void EnableOutOfBlinkCORS(bool);

third_party/blink/renderer/platform/exported/web_runtime_features.cc

@@ -76,10 +76,6 @@ void WebRuntimeFeatures::EnableOriginTrialControlledFeatures(bool enable) {
   RuntimeEnabledFeatures::SetOriginTrialControlledFeaturesEnabled(enable);
 }
 
-void WebRuntimeFeatures::EnableOriginPolicy(bool enable) {
-  RuntimeEnabledFeatures::SetOriginPolicyEnabled(enable);
-}
-
 void WebRuntimeFeatures::EnableOutOfBlinkCORS(bool enable) {
   RuntimeEnabledFeatures::SetOutOfBlinkCORSEnabled(enable);
 }

third_party/blink/renderer/platform/runtime_enabled_features.json5

@@ -842,10 +842,6 @@
     {
       name: "OrientationEvent",
     },
-    {
-      name: "OriginPolicy",
-      status: "test",
-    },
     {
       name: "OriginTrials",
       status: "stable",