Bug 1760887 - Expose FEATURE_VP8_HW_DECODE and FEATURE_VP9_HW_DECODE to the downloadable blocklist. r=gfx-reviewers,jnicol

Differential Revision: https://phabricator.services.mozilla.com/D141803

widget/GfxInfoBase.cpp

@@ -209,9 +209,10 @@ static const char* GetPrefNameForFeature(int32_t aFeature) {
       name = BLOCKLIST_PREF_BRANCH "dx.p016";
       break;
     case nsIGfxInfo::FEATURE_VP8_HW_DECODE:
+      name = BLOCKLIST_PREF_BRANCH "vp8.hw-decode";
+      break;
     case nsIGfxInfo::FEATURE_VP9_HW_DECODE:
-      // We don't provide prefs for these features as these are
-      // not handling downloadable blocklist.
+      name = BLOCKLIST_PREF_BRANCH "vp9.hw-decode";
       break;
     case nsIGfxInfo::FEATURE_GL_SWIZZLE:
       name = BLOCKLIST_PREF_BRANCH "gl.swizzle";
@@ -472,8 +473,12 @@ static int32_t BlocklistFeatureToGfxFeature(const nsAString& aFeature) {
   if (aFeature.EqualsLiteral("DX_NV12")) {
     return nsIGfxInfo::FEATURE_DX_NV12;
   }
-  // We do not support FEATURE_VP8_HW_DECODE and FEATURE_VP9_HW_DECODE
-  // in downloadable blocklist.
+  if (aFeature.EqualsLiteral("VP8_HW_DECODE")) {
+    return nsIGfxInfo::FEATURE_VP8_HW_DECODE;
+  }
+  if (aFeature.EqualsLiteral("VP9_HW_DECODE")) {
+    return nsIGfxInfo::FEATURE_VP9_HW_DECODE;
+  }
   if (aFeature.EqualsLiteral("GL_SWIZZLE")) {
     return nsIGfxInfo::FEATURE_GL_SWIZZLE;
   }