Bug 1365871 - stylo: Make editor/libeditor/tests pass by removing MOZ_CRASH from CSSEditUtils. r=xidorn

The MOZ_CRASH was added because we were lacking a implementation of ServoDeclarationBlock::GetPropertyValueByID, but it was added in Bug1294299

MozReview-Commit-ID: GPsFvTLxsMd

--HG--
extra : rebase_source : d51837def3a9a76dfa2af01dcb26b607dd48a5e6

editor/libeditor/CSSEditUtils.cpp

@@ -549,15 +549,13 @@ CSSEditUtils::GetCSSInlinePropertyBase(nsINode* aNode,
   if (!decl) {
     return NS_OK;
   }
-  if (decl->IsServo()) {
-    MOZ_CRASH("stylo: not implemented");
-    return NS_ERROR_NOT_IMPLEMENTED;
-  }
+
   nsCSSPropertyID prop =
     nsCSSProps::LookupProperty(nsDependentAtomString(aProperty),
                                CSSEnabledState::eForAllContent);
   MOZ_ASSERT(prop != eCSSProperty_UNKNOWN);
-  decl->AsGecko()->GetPropertyValueByID(prop, aValue);
+
+  decl->GetPropertyValueByID(prop, aValue);
 
   return NS_OK;
 }