Fix integration tests in src/chrome and src/extensions so that we can turn on IO thread checks wi...

chrome/browser/extensions/extension_webui_apitest.cc

 // Copyright 2014 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/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/memory/ptr_util.h"
 #include "base/path_service.h"
+#include "base/threading/thread_restrictions.h"
 #include "base/values.h"
 #include "build/build_config.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/test/browser_test_utils.h"
 #include "extensions/browser/event_router.h"
 #include "extensions/common/api/test.h"
 #include "extensions/common/extension.h"
 #include "extensions/test/extension_test_message_listener.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace extensions {
 
 namespace OnMessage = api::test::OnMessage;
 
 namespace {
 
 // Tests running extension APIs on WebUI.
 class ExtensionWebUITest : public ExtensionApiTest {
  protected:
   testing::AssertionResult RunTest(const char* name,
                                    const GURL& page_url,
                                    const GURL& frame_url,
                                    bool expected_result) {
-    // Tests are located in chrome/test/data/extensions/webui/$(name).
-    base::FilePath path;
-    PathService::Get(chrome::DIR_TEST_DATA, &path);
-    path =
-        path.AppendASCII("extensions").AppendASCII("webui").AppendASCII(name);
+    std::string script;
+    {
+      base::ThreadRestrictions::ScopedAllowIO allow_io;
+      // Tests are located in chrome/test/data/extensions/webui/$(name).
+      base::FilePath path;
+      PathService::Get(chrome::DIR_TEST_DATA, &path);
+      path =
+          path.AppendASCII("extensions").AppendASCII("webui").AppendASCII(name);
 
-    // Read the test.
-    if (!base::PathExists(path))
-      return testing::AssertionFailure() << "Couldn't find " << path.value();
-    std::string script;
-    base::ReadFileToString(path, &script);
-    script = "(function(){'use strict';" + script + "}());";
+      // Read the test.
+      if (!base::PathExists(path))
+        return testing::AssertionFailure() << "Couldn't find " << path.value();
+      base::ReadFileToString(path, &script);
+      script = "(function(){'use strict';" + script + "}());";
+    }
 
     // Run the test.
     bool actual_result = false;
     content::RenderFrameHost* webui = NavigateToWebUI(page_url, frame_url);
     if (!webui)
       return testing::AssertionFailure() << "Failed to navigate to WebUI";
     CHECK(content::ExecuteScriptAndExtractBool(webui, script, &actual_result));
     return (expected_result == actual_result)
                ? testing::AssertionSuccess()
                : (testing::AssertionFailure() << "Check console output");
@@ skipping 184 matching lines @@
   listener->Reply(extension_id);
   listener.reset(new ExtensionTestMessageListener("createfailed", false));
   ASSERT_TRUE(listener->WaitUntilSatisfied());
 }
 
 #endif
 
 }  // namespace
 
 }  // namespace extensions