First step to remove scripting from PPP_Instance and PPB_Instance.

ppapi/cpp/instance.cc

Index: ppapi/cpp/instance.cc
diff --git a/ppapi/cpp/instance.cc b/ppapi/cpp/instance.cc
index 12cfc021d2c0a9212a236cf438eca1c48c3ab4c0..985e9b729cc3192aad6c02c009a9d3ffa743d053 100644
--- a/ppapi/cpp/instance.cc
+++ b/ppapi/cpp/instance.cc
@@ -70,14 +70,11 @@ void Instance::HandleMessage(const Var& /*message*/) {
   return;
 }
 
-Var Instance::GetInstanceObject() {
-  return Var();
-}
-
 Var Instance::GetSelectedText(bool /* html */) {
   return Var();
 }
 
+#ifndef PPAPI_INSTANCE_REMOVE_SCRIPTING
 Var Instance::GetWindowObject() {
   if (!has_interface<PPB_Instance>())
     return Var();
@@ -93,6 +90,21 @@ Var Instance::GetOwnerElementObject() {
                  pp_instance()));
 }
 
+Var Instance::ExecuteScript(const Var& script, Var* exception) {
+  if (!has_interface<PPB_Instance>())
+    return Var();
+  return Var(Var::PassRef(),
+             get_interface<PPB_Instance>()->ExecuteScript(
+                 pp_instance(),
+                 script.pp_var(),
+                 Var::OutException(exception).get()));
+}
+
+Var Instance::GetInstanceObject() {
+  return Var();
+}
+#endif
+
 bool Instance::BindGraphics(const Graphics2D& graphics) {
   if (!has_interface<PPB_Instance>())
     return false;
@@ -114,16 +126,6 @@ bool Instance::IsFullFrame() {
       pp_instance()));
 }
 
-Var Instance::ExecuteScript(const Var& script, Var* exception) {
-  if (!has_interface<PPB_Instance>())
-    return Var();
-  return Var(Var::PassRef(),
-             get_interface<PPB_Instance>()->ExecuteScript(
-                 pp_instance(),
-                 script.pp_var(),
-                 Var::OutException(exception).get()));
-}
-
 void Instance::PostMessage(const Var& message) {
   if (!has_interface<PPB_Messaging>())
     return;