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

chrome/browser/chromeos/login/eula_browsertest.cc

 // Copyright 2013 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/strings/utf_string_conversions.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/test/browser_test_utils.h"
 #include "net/http/http_response_headers.h"
 #include "net/url_request/test_url_fetcher_factory.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 using ::testing::Exactly;
 using ::testing::Invoke;
 using ::testing::_;
 
 namespace {
 
 const char kEULAURL[] =
     "https://www.google.com/intl/en-US/chrome/eula_text.html";
 const char kFakeOnlineEULA[] = "No obligations at all";
+#if defined(GOOGLE_CHROME_BUILD)
 const char kOfflineEULAWarning[] = "A copy of the Google Terms of Service";
+#endif
 
 class TermsOfServiceProcessBrowserTest : public InProcessBrowserTest {
 };
 
 class TestURLFetcherCallback {
  public:
   scoped_ptr<net::FakeURLFetcher> CreateURLFetcher(
       const GURL& url,
       net::URLFetcherDelegate* d,
       const std::string& response_data,
@@ skipping 58 matching lines @@
   std::string body;
   ASSERT_TRUE(content::ExecuteScriptAndExtractString(
       web_contents,
       "window.domAutomationController.send(document.body.textContent)",
       &body));
   EXPECT_NE(std::string(), body);
 #endif
 }
 
 }  // namespace