Support automatic javascript test registry in gtest when creating WebUI tests.

chrome/common/chrome_paths.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 "chrome/common/chrome_paths.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/logging.h"
+#include "base/memory/singleton.h"
 #include "base/path_service.h"
 #include "base/string_util.h"
 #include "base/sys_info.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_paths_internal.h"
 #include "chrome/common/chrome_switches.h"
 
 #if defined(OS_MACOSX)
 #include "base/mac/mac_util.h"
 #endif
 
+namespace chrome {
+
+bool PathProvider(int key, FilePath* result);
+
+}  // namespace chrome
+
 namespace {
 
 // File name of the internal Flash plugin on different platforms.
 const FilePath::CharType kInternalFlashPluginFileName[] =
 #if defined(OS_MACOSX)
     FILE_PATH_LITERAL("Flash Player Plugin for Chrome.plugin");
 #elif defined(OS_WIN)
     FILE_PATH_LITERAL("gcswf32.dll");
 #else  // OS_LINUX, etc.
     FILE_PATH_LITERAL("libgcflashplayer.so");
@@ skipping 13 matching lines @@
 const FilePath::CharType kInternalNaClPluginFileName[] =
 #if defined(OS_WIN)
     FILE_PATH_LITERAL("ppGoogleNaClPluginChrome.dll");
 #elif defined(OS_MACOSX)
     // TODO(noelallen) Please verify this extention name is correct.
     FILE_PATH_LITERAL("ppGoogleNaClPluginChrome.plugin");
 #else  // Linux and Chrome OS
     FILE_PATH_LITERAL("libppGoogleNaClPluginChrome.so");
 #endif
 
+// web_ui_browsertest needs this service at linker initialization time so we
+// provide ability to register and unregister base on Singleton
+// construction/destruction.
+class RegistryHelper {
+ public:
+  RegistryHelper() {
+    PathService::RegisterProvider(&chrome::PathProvider,
+                                  chrome::PATH_START, chrome::PATH_END);
+  }
+
+  ~RegistryHelper() {
+    PathService::UnregisterProvider(&chrome::PathProvider);
+  }
+
+  static RegistryHelper* GetInstance() {
+    return Singleton<RegistryHelper>::get();
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(RegistryHelper);
+};
+
 }  // namespace
 
 namespace chrome {
 
 // Gets the path for internal plugins.
 bool GetInternalPluginsDirectory(FilePath* result) {
 #if defined(OS_MACOSX)
   // If called from Chrome, get internal plugins from a subdirectory of the
   // framework.
   if (base::mac::AmIBundled()) {
@@ skipping 252 matching lines @@
       !file_util::CreateDirectory(cur))
     return false;
 
   *result = cur;
   return true;
 }
 
 // This cannot be done as a static initializer sadly since Visual Studio will
 // eliminate this object file if there is no direct entry point into it.
 void RegisterPathProvider() {
-  PathService::RegisterProvider(PathProvider, PATH_START, PATH_END);
+  RegistryHelper::GetInstance();
 }
 
 }  // namespace chrome