Unify IMEDriver and IMEServer.

services/ui/ime/test_ime_driver/test_ime_driver.cc

Index: services/ui/ime/test_ime_driver/test_ime_driver.cc
diff --git a/services/ui/ime/test_ime_driver/test_ime_driver.cc b/services/ui/ime/test_ime_driver/test_ime_driver.cc
index 613d103e2504daac162d76f98bc0bfdcff8bafeb..8d1aa63f95e689cbe8166acd5aa5b7b8ed1eb4a4 100644
--- a/services/ui/ime/test_ime_driver/test_ime_driver.cc
+++ b/services/ui/ime/test_ime_driver/test_ime_driver.cc
@@ -4,6 +4,7 @@
 
 #include "services/ui/ime/test_ime_driver/test_ime_driver.h"
 
+#include "mojo/public/cpp/bindings/strong_binding.h"
 #include "services/ui/public/interfaces/ime/ime.mojom.h"
 
 namespace ui {
@@ -41,16 +42,10 @@ TestIMEDriver::TestIMEDriver() {}
 
 TestIMEDriver::~TestIMEDriver() {}
 
-void TestIMEDriver::StartSession(int32_t session_id,
-                                 mojom::StartSessionDetailsPtr details) {
-  input_method_bindings_[session_id].reset(
-      new mojo::Binding<mojom::InputMethod>(
-          new TestInputMethod(std::move(details->client)),
-          std::move(details->input_method_request)));
-}
-
-void TestIMEDriver::CancelSession(int32_t session_id) {
-  input_method_bindings_.erase(session_id);
+void TestIMEDriver::StartSession(mojom::StartSessionDetailsPtr details) {
+  mojo::MakeStrongBinding(
+      base::MakeUnique<TestInputMethod>(std::move(details->client)),
+      std::move(details->input_method_request));
 }
 
 }  // namespace test