Add TestingInstance::EvalScript method which posts a message that the test page can eval().

ppapi/native_client/src/shared/ppapi_proxy/ppb_rpc_client.cc

Index: ppapi/native_client/src/shared/ppapi_proxy/ppb_rpc_client.cc
===================================================================
--- ppapi/native_client/src/shared/ppapi_proxy/ppb_rpc_client.cc	(revision 114053)
+++ ppapi/native_client/src/shared/ppapi_proxy/ppb_rpc_client.cc	(working copy)
@@ -2557,6 +2557,44 @@
   return retval;
 }
 
+NaClSrpcError PpbTestingRpcClient::PPB_Testing_SimulateInputEvent(
+    NaClSrpcChannel* channel,
+    PP_Instance instance,
+    PP_Resource input_event)  {
+  VCHECK(ppapi_proxy::PPBCoreInterface()->IsMainThread(),
+         ("%s: PPAPI calls are not supported off the main thread\n",
+          __FUNCTION__));
+  NaClSrpcError retval;
+  retval = NaClSrpcInvokeBySignature(
+      channel,
+      "PPB_Testing_SimulateInputEvent:ii:",
+      instance,
+      input_event
+  );
+  return retval;
+}
+
+NaClSrpcError PpbTestingRpcClient::PPB_Testing_ExecuteScript(
+    NaClSrpcChannel* channel,
+    PP_Instance instance,
+    nacl_abi_size_t script_bytes, char* script,
+    nacl_abi_size_t* result_bytes, char* result,
+    nacl_abi_size_t* exception_bytes, char* exception)  {
+  VCHECK(ppapi_proxy::PPBCoreInterface()->IsMainThread(),
+         ("%s: PPAPI calls are not supported off the main thread\n",
+          __FUNCTION__));
+  NaClSrpcError retval;
+  retval = NaClSrpcInvokeBySignature(
+      channel,
+      "PPB_Testing_ExecuteScript:iC:CC",
+      instance,
+      script_bytes, script,
+      result_bytes, result,
+      exception_bytes, exception
+  );
+  return retval;
+}
+
 NaClSrpcError PpbUDPSocketPrivateRpcClient::PPB_UDPSocket_Private_Create(
     NaClSrpcChannel* channel,
     PP_Instance instance_id,