android: Enable -Wunused-const-variable.

chrome/browser/policy/cloud/user_policy_signin_service_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 "base/message_loop/message_loop.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/prefs/pref_service.h"
 #include "base/run_loop.h"
 #include "base/time/time.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 40 matching lines @@
 using testing::AnyNumber;
 using testing::Mock;
 using testing::_;
 
 namespace policy {
 
 namespace {
 
 const char kTestUser[] = "testuser@test.com";
 
+#if !defined(OS_ANDROID)
 const char kValidTokenResponse[] =
     "{"
     "  \"access_token\": \"at1\","
     "  \"expires_in\": 3600,"
     "  \"token_type\": \"Bearer\""
     "}";
+#endif
 
 const char kHostedDomainResponse[] =
     "{"
     "  \"hd\": \"test.com\""
     "}";
 
 class SigninManagerFake : public FakeSigninManager {
  public:
   explicit SigninManagerFake(Profile* profile)
       : FakeSigninManager(profile) {
@@ skipping 699 matching lines @@
   base::RunLoop().RunUntilIdle();
   EXPECT_FALSE(manager_->IsClientRegistered());
 #if !defined(OS_ANDROID)
   EXPECT_FALSE(signin_manager_->IsSignoutProhibited());
 #endif
 }
 
 }  // namespace
 
 }  // namespace policy