mac: Prepare most test code for -Wunused-functions too.

ppapi/tests/test_graphics_2d.cc

 // Copyright (c) 2012 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 "ppapi/tests/test_graphics_2d.h"
 
 #include <stdlib.h>
 #include <string.h>
 
 #include <set>
@@ skipping 10 matching lines @@
 #include "ppapi/cpp/instance.h"
 #include "ppapi/cpp/module.h"
 #include "ppapi/cpp/rect.h"
 #include "ppapi/tests/test_utils.h"
 #include "ppapi/tests/testing_instance.h"
 
 REGISTER_TEST_CASE(Graphics2D);
 
 namespace {
 
-// A NOP flush callback for use in various tests.
-void FlushCallbackNOP(void* data, int32_t result) {
-}
-
-void FlushCallbackQuitMessageLoop(void* data, int32_t result) {
-  static_cast<TestGraphics2D*>(data)->QuitMessageLoop();
-}
-
 bool CanFlushContext(pp::Instance* instance, pp::Graphics2D* context) {
   TestCompletionCallback callback(instance->pp_instance());
   callback.WaitForResult(context->Flush(callback.GetCallback()));
   return (callback.result() == PP_OK);
 }
 
 bool CanFlushContextC(pp::Instance* instance, PP_Resource graphics_2d,
                       const PPB_Graphics2D_1_1* graphics_2d_if) {
   TestCompletionCallback callback(instance->pp_instance());
   callback.WaitForResult(graphics_2d_if->Flush(
@@ skipping 759 matching lines @@
   pp::Graphics2D dc(instance_, pp::Size(w, h), false);
   ASSERT_FALSE(dc.is_null());
   ASSERT_TRUE(instance_->BindGraphics(dc));
 
   ASSERT_TRUE(instance_->BindGraphics(pp::Graphics2D()));
   ASSERT_TRUE(instance_->BindGraphics(pp::Graphics3D()));
 
   PASS();
 }