Fixes for -Wunused-function on Linux, Android and ChromeOS

chrome/browser/policy/policy_browsertest.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 <algorithm>
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 285 matching lines @@
   bool result = false;
   EXPECT_TRUE(content::ExecuteScriptAndExtractBool(
       contents,
       "var textContent = document.body.textContent;"
       "var hasError = textContent.indexOf('ERR_BLOCKED_BY_ADMINISTRATOR') >= 0;"
       "domAutomationController.send(hasError);",
       &result));
   EXPECT_TRUE(result);
 }
 
+#if !defined(OS_CHROMEOS)
 // Downloads a file named |file| and expects it to be saved to |dir|, which
 // must be empty.
 void DownloadAndVerifyFile(
     Browser* browser, const base::FilePath& dir, const base::FilePath& file) {
   content::DownloadManager* download_manager =
       content::BrowserContext::GetDownloadManager(browser->profile());
   content::DownloadTestObserverTerminal observer(
       download_manager, 1,
       content::DownloadTestObserver::ON_DANGEROUS_DOWNLOAD_FAIL);
   GURL url(URLRequestMockHTTPJob::GetMockUrl(file));
   base::FilePath downloaded = dir.Append(file);
   EXPECT_FALSE(base::PathExists(downloaded));
   ui_test_utils::NavigateToURLWithDisposition(
       browser, url, CURRENT_TAB,
       ui_test_utils::BROWSER_TEST_WAIT_FOR_NAVIGATION);
   observer.WaitForFinished();
   EXPECT_EQ(
       1u, observer.NumDownloadsSeenInState(content::DownloadItem::COMPLETE));
   EXPECT_TRUE(base::PathExists(downloaded));
   base::FileEnumerator enumerator(dir, false, base::FileEnumerator::FILES);
   EXPECT_EQ(file, enumerator.Next().BaseName());
   EXPECT_EQ(base::FilePath(), enumerator.Next());
 }
 
-#if defined(OS_CHROMEOS)
+#else
+
 int CountScreenshots() {
   DownloadPrefs* download_prefs = DownloadPrefs::FromBrowserContext(
       ash::Shell::GetInstance()->delegate()->GetCurrentBrowserContext());
   base::FileEnumerator enumerator(download_prefs->DownloadPath(),
                                   false, base::FileEnumerator::FILES,
                                   "Screenshot*");
   int count = 0;
   while (!enumerator.Next().empty())
     count++;
   return count;
 }
 #endif
 
 // Checks if WebGL is enabled in the given WebContents.
+#if defined(OS_MACOSX)
 bool IsWebGLEnabled(content::WebContents* contents) {
   bool result = false;
   EXPECT_TRUE(content::ExecuteScriptAndExtractBool(
       contents,
       "var canvas = document.createElement('canvas');"
       "var context = canvas.getContext('experimental-webgl');"
       "domAutomationController.send(context != null);",
       &result));
   return result;
 }
+#endif  // defined(OS_MACOSX)
 
 bool IsJavascriptEnabled(content::WebContents* contents) {
   scoped_ptr<base::Value> value = content::ExecuteScriptAndGetValue(
       contents->GetRenderViewHost(), "123");
   int result = 0;
   if (!value->GetAsInteger(&result))
     EXPECT_EQ(base::Value::TYPE_NULL, value->GetType());
   return result == 123;
 }
 
@@ skipping 2467 matching lines @@
       chrome_variations::VariationsService::GetVariationsServerURL(
           g_browser_process->local_state());
   EXPECT_TRUE(StartsWithASCII(url.spec(), default_variations_url, true));
   std::string value;
   EXPECT_TRUE(net::GetValueForKeyInQuery(url, "restrict", &value));
   EXPECT_EQ("restricted", value);
 }
 #endif
 
 }  // namespace policy