Move EnvironmentVariableGetter from base/linux_util.h to base/env_var.h. Labe...

base/linux_util.h

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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.
 
-#ifndef BASE_LINUX_UTIL_H__
-#define BASE_LINUX_UTIL_H__
+#ifndef BASE_LINUX_UTIL_H_
+#define BASE_LINUX_UTIL_H_
 
 #include <stdint.h>
 #include <sys/types.h>
 
 #include <string>
 
+class EnvVarGetter;
 class FilePath;
 
 namespace base {
 
 static const char kFindInodeSwitch[] = "--find-inode";
 
 // Makes a copy of |pixels| with the ordering changed from BGRA to RGBA.
 // The caller is responsible for free()ing the data. If |stride| is 0,
 // it's assumed to be 4 * |width|.
 uint8_t* BGRAToRGBA(const uint8_t* pixels, int width, int height, int stride);
 
 // Get the Linux Distro if we can, or return "Unknown", similar to
 // GetWinVersion() in base/win_util.h.
 std::string GetLinuxDistro();
 
-// These are used to derive mocks for unittests.
-class EnvironmentVariableGetter {
- public:
-  virtual ~EnvironmentVariableGetter() {}
-  // Gets an environment variable's value and stores it in
-  // result. Returns false if the key is unset.
-  virtual bool Getenv(const char* variable_name, std::string* result) = 0;
-
-  // Create an instance of EnvironmentVariableGetter
-  static EnvironmentVariableGetter* Create();
-};
-
 // Get the home directory.
-FilePath GetHomeDir(EnvironmentVariableGetter* env);
+FilePath GetHomeDir(EnvVarGetter* env);
 
 // Utility function for getting XDG directories.
 // |env_name| is the name of an environment variable that we want to use to get
 // a directory path. |fallback_dir| is the directory relative to $HOME that we
 // use if |env_name| cannot be found or is empty. |fallback_dir| may be NULL.
 // Examples of |env_name| are XDG_CONFIG_HOME and XDG_DATA_HOME.
-FilePath GetXDGDirectory(EnvironmentVariableGetter* env,
-                         const char* env_name, const char* fallback_dir);
+FilePath GetXDGDirectory(EnvVarGetter* env, const char* env_name,
+                         const char* fallback_dir);
 
 // Wrapper around xdg_user_dir_lookup() from src/base/third_party/xdg-user-dirs
 // This looks up "well known" user directories like the desktop and music
 // folder. Examples of |dir_name| are DESKTOP and MUSIC.
-FilePath GetXDGUserDirectory(EnvironmentVariableGetter* env,
-                             const char* dir_name, const char* fallback_dir);
+FilePath GetXDGUserDirectory(EnvVarGetter* env, const char* dir_name,
+                             const char* fallback_dir);
 
 enum DesktopEnvironment {
   DESKTOP_ENVIRONMENT_OTHER,
   DESKTOP_ENVIRONMENT_GNOME,
   // KDE3 and KDE4 are sufficiently different that we count
   // them as two different desktop environments here.
   DESKTOP_ENVIRONMENT_KDE3,
   DESKTOP_ENVIRONMENT_KDE4,
   DESKTOP_ENVIRONMENT_XFCE,
 };
 
 // Return an entry from the DesktopEnvironment enum with a best guess
 // of which desktop environment we're using.  We use this to know when
 // to attempt to use preferences from the desktop environment --
 // proxy settings, password manager, etc.
-DesktopEnvironment GetDesktopEnvironment(EnvironmentVariableGetter* env);
+DesktopEnvironment GetDesktopEnvironment(EnvVarGetter* env);
 
 // Return a string representation of the given desktop environment.
 // May return NULL in the case of DESKTOP_ENVIRONMENT_OTHER.
 const char* GetDesktopEnvironmentName(DesktopEnvironment env);
 // Convenience wrapper that calls GetDesktopEnvironment() first.
-const char* GetDesktopEnvironmentName(EnvironmentVariableGetter* env);
+const char* GetDesktopEnvironmentName(EnvVarGetter* env);
 
 // Return the inode number for the UNIX domain socket |fd|.
 bool FileDescriptorGetInode(ino_t* inode_out, int fd);
 
 // Find the process which holds the given socket, named by inode number. If
 // multiple processes hold the socket, this function returns false.
 bool FindProcessHoldingSocket(pid_t* pid_out, ino_t socket_inode);
 
 }  // namespace base
 
-#endif  // BASE_LINUX_UTIL_H__
+#endif  // BASE_LINUX_UTIL_H_