AW: add feature flags for methods on callback-related classes

This adds feature flags for WebResourceError and SafeBrowsingResponse
methods (objects which are passed back in WebViewClient callbacks).

Support for these methods landed a while ago, so this CL declares the
features are implemented.

Bug: 832205
Test: N/A
Change-Id: I73665515915cc9305636f09b72fbad8d6a9313ca
Reviewed-on: https://chromium-review.googlesource.com/1010717Reviewed-by: Gustav Sennton <gsennton@chromium.org>
Commit-Queue: Nate Fischer <ntfschr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#550305}

android_webview/support_library/boundary_interfaces/src/org/chromium/support_lib_boundary/util/Features.java

@@ -80,4 +80,22 @@ public class Features {
     // WebResourceRequest.isRedirect
     public static final String WEB_RESOURCE_REQUEST_IS_REDIRECT =
             "WEB_RESOURCE_REQUEST_IS_REDIRECT";
+
+    // WebResourceError.getDescription
+    public static final String WEB_RESOURCE_ERROR_GET_DESCRIPTION =
+            "WEB_RESOURCE_ERROR_GET_DESCRIPTION";
+
+    // WebResourceError.getErrorCode
+    public static final String WEB_RESOURCE_ERROR_GET_CODE = "WEB_RESOURCE_ERROR_GET_CODE";
+
+    // SafeBrowsingResponse.backToSafety
+    public static final String SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY =
+            "SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY";
+
+    // SafeBrowsingResponse.proceed
+    public static final String SAFE_BROWSING_RESPONSE_PROCEED = "SAFE_BROWSING_RESPONSE_PROCEED";
+
+    // SafeBrowsingResponse.showInterstitial
+    public static final String SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL =
+            "SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL";
 }

android_webview/support_library/java/src/org/chromium/support_lib_glue/SupportLibWebViewChromiumFactory.java

@@ -49,7 +49,12 @@ class SupportLibWebViewChromiumFactory implements WebViewProviderFactoryBoundary
                     Features.RECEIVE_HTTP_ERROR,
                     Features.SAFE_BROWSING_HIT,
                     Features.SHOULD_OVERRIDE_WITH_REDIRECTS,
-                    Features.WEB_RESOURCE_REQUEST_IS_REDIRECT
+                    Features.WEB_RESOURCE_REQUEST_IS_REDIRECT,
+                    Features.WEB_RESOURCE_ERROR_GET_DESCRIPTION,
+                    Features.WEB_RESOURCE_ERROR_GET_CODE,
+                    Features.SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY,
+                    Features.SAFE_BROWSING_RESPONSE_PROCEED,
+                    Features.SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL
             };
     // clang-format on