Add support for converting cc::FilterOperations into an SkImageFilter

content/common/cc_messages.cc

Index: content/common/cc_messages.cc
diff --git a/content/common/cc_messages.cc b/content/common/cc_messages.cc
index 9065a946ad3bc5ff857e30610170e469a4998575..f4b5a8af0e28db5a98f0d70e44312f66f05973ca 100644
--- a/content/common/cc_messages.cc
+++ b/content/common/cc_messages.cc
@@ -40,6 +40,9 @@ void ParamTraits<cc::FilterOperation>::Write(
       WriteParam(m, p.amount());
       WriteParam(m, p.zoom_inset());
       break;
+    case cc::FilterOperation::REFERENCE:
+      // Reference filters cannot be serialized until crbug.com/164084 is fixed.
+      break;
   }
 }
 
@@ -105,6 +108,11 @@ bool ParamTraits<cc::FilterOperation>::Read(
         success = true;
       }
       break;
+    case cc::FilterOperation::REFERENCE:
+      // Reference filters cannot be serialized until crbug.com/164084 is fixed.
+      NOTREACHED();
+      success = false;
+      break;
   }
   return success;
 }
@@ -147,6 +155,9 @@ void ParamTraits<cc::FilterOperation>::Log(
       l->append(", ");
       LogParam(p.zoom_inset(), l);
       break;
+    case cc::FilterOperation::REFERENCE:
+      // Reference filters cannot be serialized until crbug.com/164084 is fixed.
+      break;
   }
   l->append(")");
 }