Move AlterEnvironment to base/environment.h, implement on Windows.

chrome/browser/platform_util_linux.cc

Index: chrome/browser/platform_util_linux.cc
diff --git a/chrome/browser/platform_util_linux.cc b/chrome/browser/platform_util_linux.cc
index 60d446714633c179e3c1102e0ee96a5195c90b60..5e65bc2e1606689538a251d3bd3d042afba23e3e 100644
--- a/chrome/browser/platform_util_linux.cc
+++ b/chrome/browser/platform_util_linux.cc
@@ -21,25 +21,22 @@ void XDGUtil(const std::string& util, const std::string& arg) {
   argv.push_back(util);
   argv.push_back(arg);
 
-  base::EnvironmentVector env;
+  base::LaunchOptions options;
   // xdg-open can fall back on mailcap which eventually might plumb through
   // to a command that needs a terminal.  Set the environment variable telling
   // it that we definitely don't have a terminal available and that it should
   // bring up a new terminal if necessary.  See "man mailcap".
-  env.push_back(std::make_pair("MM_NOTTTY", "1"));
+  options.environ["MM_NOTTTY"] = "1";
 
   // In Google Chrome, we do not let GNOME's bug-buddy intercept our crashes.
   // However, we do not want this environment variable to propagate to external
   // applications. See http://crbug.com/24120
   char* disable_gnome_bug_buddy = getenv("GNOME_DISABLE_CRASH_DIALOG");
   if (disable_gnome_bug_buddy &&
-      disable_gnome_bug_buddy == std::string("SET_BY_GOOGLE_CHROME")) {
-    env.push_back(std::make_pair("GNOME_DISABLE_CRASH_DIALOG", ""));
-  }
+      disable_gnome_bug_buddy == std::string("SET_BY_GOOGLE_CHROME"))
+    options.environ["GNOME_DISABLE_CRASH_DIALOG"] = std::string();
 
   base::ProcessHandle handle;
-  base::LaunchOptions options;
-  options.environ = &env;
   if (base::LaunchProcess(argv, options, &handle))
     base::EnsureProcessGetsReaped(handle);
 }