Add SetClient method implementation to InterfaceImpl.

mojo/public/cpp/bindings/tests/request_response_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "mojo/public/cpp/bindings/allocation_scope.h"
 #include "mojo/public/cpp/environment/environment.h"
 #include "mojo/public/cpp/test_support/test_utils.h"
 #include "mojo/public/cpp/utility/run_loop.h"
 #include "mojo/public/interfaces/bindings/tests/sample_import.mojom.h"
 #include "mojo/public/interfaces/bindings/tests/sample_interfaces.mojom.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace mojo {
 namespace test {
 namespace {
 
 class ProviderImpl : public InterfaceImpl<sample::Provider> {
  public:
   virtual void OnConnectionError() MOJO_OVERRIDE {
     delete this;
   }
 
-  virtual void SetClient(sample::ProviderClient* client) MOJO_OVERRIDE {
-    // Ignored. TODO(darin): Eliminate ProviderClient.
-  }
-
   virtual void EchoString(
       const String& a,
       const Callback<void(String)>& callback) MOJO_OVERRIDE {
     AllocationScope scope;
     Callback<void(String)> callback_copy;
     // Make sure operator= is used.
     callback_copy = callback;
     callback_copy.Run(a);
   }
 
@@ skipping 130 matching lines @@
   }
 
   PumpMessages();
 
   EXPECT_EQ(sample::ENUM_VALUE, value);
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace mojo