iwyu: Include stringprintf.h where appropriate, part 3.

chrome/browser/extensions/app_background_page_apitest.cc

 // Copyright (c) 2011 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/string_util.h"
+#include "base/stringprintf.h"
 #include "chrome/browser/background_contents_service.h"
 #include "chrome/browser/background_contents_service_factory.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/test/ui_test_utils.h"
 #include "net/base/mock_host_resolver.h"
@@ skipping 26 matching lines @@
   }
 
  private:
   ScopedTempDir app_dir_;
 };
 
 IN_PROC_BROWSER_TEST_F(AppBackgroundPageApiTest, Basic) {
   host_resolver()->AddRule("a.com", "127.0.0.1");
   ASSERT_TRUE(StartTestServer());
 
-  std::string app_manifest = StringPrintf(
+  std::string app_manifest = base::StringPrintf(
       "{"
       "  \"name\": \"App\","
       "  \"version\": \"0.1\","
       "  \"app\": {"
       "    \"urls\": ["
       "      \"http://a.com/\""
       "    ],"
       "    \"launch\": {"
       "      \"web_url\": \"http://a.com:%d/\""
       "    }"
       "  },"
       "  \"permissions\": [\"background\"]"
       "}",
       test_server()->host_port_pair().port());
 
   FilePath app_dir;
   ASSERT_TRUE(CreateApp(app_manifest, &app_dir));
   ASSERT_TRUE(LoadExtension(app_dir));
   ASSERT_TRUE(RunExtensionTest("app_background_page/basic")) << message_;
 }
 
 // Crashy, http://crbug.com/49215.
 IN_PROC_BROWSER_TEST_F(AppBackgroundPageApiTest, DISABLED_LacksPermission) {
   host_resolver()->AddRule("a.com", "127.0.0.1");
   ASSERT_TRUE(StartTestServer());
 
-  std::string app_manifest = StringPrintf(
+  std::string app_manifest = base::StringPrintf(
       "{"
       "  \"name\": \"App\","
       "  \"version\": \"0.1\","
       "  \"app\": {"
       "    \"urls\": ["
       "      \"http://a.com/\""
       "    ],"
       "    \"launch\": {"
       "      \"web_url\": \"http://a.com:%d/\""
       "    }"
       "  }"
       "}",
       test_server()->host_port_pair().port());
 
   FilePath app_dir;
   ASSERT_TRUE(CreateApp(app_manifest, &app_dir));
   ASSERT_TRUE(LoadExtension(app_dir));
   ASSERT_TRUE(RunExtensionTest("app_background_page/lacks_permission"))
       << message_;
 }
 
 IN_PROC_BROWSER_TEST_F(AppBackgroundPageApiTest, ManifestBackgroundPage) {
   host_resolver()->AddRule("a.com", "127.0.0.1");
   ASSERT_TRUE(StartTestServer());
 
-  std::string app_manifest = StringPrintf(
+  std::string app_manifest = base::StringPrintf(
       "{"
       "  \"name\": \"App\","
       "  \"version\": \"0.1\","
       "  \"app\": {"
       "    \"urls\": ["
       "      \"http://a.com/\""
       "    ],"
       "    \"launch\": {"
       "      \"web_url\": \"http://a.com:%d/\""
       "    }"
       "  },"
       "  \"permissions\": [\"background\"],"
       "  \"background_page\": \"http://a.com:%d/test.html\""
       "}",
       test_server()->host_port_pair().port(),
       test_server()->host_port_pair().port());
 
   FilePath app_dir;
   ASSERT_TRUE(CreateApp(app_manifest, &app_dir));
   ASSERT_TRUE(LoadExtension(app_dir));
 
   const Extension* extension = GetSingleLoadedExtension();
   ASSERT_TRUE(
       BackgroundContentsServiceFactory::GetForProfile(browser()->profile())->
           GetAppBackgroundContents(ASCIIToUTF16(extension->id())));
 }