linux and chromeos: Turn on -Wunused-const-variable.

chromeos/dbus/modem_messaging_client_unittest.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 "chromeos/dbus/modem_messaging_client.h"
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "base/values.h"
 #include "dbus/message.h"
@@ skipping 29 matching lines @@
 class MockListCallback {
  public:
   MOCK_METHOD1(Run, void(const std::vector<dbus::ObjectPath>& result));
 };
 
 // D-Bus service name used by test.
 const char kServiceName[] = "service.name";
 // D-Bus object path used by test.
 const char kObjectPath[] = "/object/path";
 
-// Keys of SMS dictionary.
-const char kNumberKey[] = "number";
-const char kTextKey[] = "text";
-
-// Example values of SMS dictionary.
-const char kExampleNumber[] = "00012345678";
-const char kExampleText[] = "Hello.";
-
 }  // namespace
 
 class ModemMessagingClientTest : public testing::Test {
  public:
   ModemMessagingClientTest() : response_(NULL),
                                expected_result_(NULL) {}
 
   virtual void SetUp() OVERRIDE {
     // Create a mock bus.
     dbus::Bus::Options options;
@@ skipping 174 matching lines @@
   // Call List.
   client_->List(kServiceName, dbus::ObjectPath(kObjectPath),
                 base::Bind(&MockListCallback::Run,
                            base::Unretained(&callback)));
 
   // Run the message loop.
   message_loop_.RunUntilIdle();
 }
 
 }  // namespace chromeos