Remove two unused functions from dart:sky.internals

sky/viewer/internals.cc

Index: sky/viewer/internals.cc
diff --git a/sky/viewer/internals.cc b/sky/viewer/internals.cc
index 208f698a80b0cb3098b452daa94c442e27cf3744..c2d7df3788d6d493cfa2c823ae905935089b748e 100644
--- a/sky/viewer/internals.cc
+++ b/sky/viewer/internals.cc
@@ -25,21 +25,11 @@ Internals* GetInternals() {
   return static_cast<Internals*>(state->GetUserData(&kInternalsKey));
 }
 
-void ContentAsText(Dart_NativeArguments args) {
-  Dart_Handle result = StdStringToDart(GetInternals()->ContentAsText());
-  Dart_SetReturnValue(args, result);
-}
-
 void NotifyTestComplete(Dart_NativeArguments args) {
   Dart_Handle test_result = Dart_GetNativeArgument(args, 0);
   GetInternals()->NotifyTestComplete(StdStringFromDart(test_result));
 }
 
-void RenderTreeAsText(Dart_NativeArguments args) {
-  Dart_Handle result = StdStringToDart(GetInternals()->RenderTreeAsText());
-  Dart_SetReturnValue(args, result);
-}
-
 void TakeShellProxyHandle(Dart_NativeArguments args) {
   Dart_SetIntegerReturnValue(args,
       GetInternals()->TakeShellProxyHandle().value());
@@ -61,9 +51,7 @@ void TakeServiceRegistry(Dart_NativeArguments args) {
 }
 
 const DartBuiltin::Natives kNativeFunctions[] = {
-    {"contentAsText", ContentAsText, 0},
     {"notifyTestComplete", NotifyTestComplete, 1},
-    {"renderTreeAsText", RenderTreeAsText, 0},
     {"takeShellProxyHandle", TakeShellProxyHandle, 0},
     {"takeServicesProvidedByEmbedder", TakeServicesProvidedByEmbedder, 0},
     {"takeServicesProvidedToEmbedder", TakeServicesProvidedToEmbedder, 0},
@@ -108,14 +96,6 @@ Internals::Internals(DocumentView* document_view)
 Internals::~Internals() {
 }
 
-std::string Internals::RenderTreeAsText() {
-  return std::string();
-}
-
-std::string Internals::ContentAsText() {
-  return std::string();
-}
-
 void Internals::NotifyTestComplete(const std::string& test_result) {
   if (!RuntimeFlags::Get().testing())
     return;