Revert 56738 - Fix CheckFalseTest.CheckFails on Linux after my change to ui_t...

chrome/test/ui/ui_test.cc

Index: chrome/test/ui/ui_test.cc
===================================================================
--- chrome/test/ui/ui_test.cc	(revision 56775)
+++ chrome/test/ui/ui_test.cc	(working copy)
@@ -15,7 +15,6 @@
 #include "app/sql/connection.h"
 #include "base/base_switches.h"
 #include "base/command_line.h"
-#include "base/environment.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
@@ -386,17 +385,6 @@
     // side. Using PathService seems to be the most reliable, consistent way
     // to do that.
     ASSERT_TRUE(PathService::Override(chrome::DIR_USER_DATA, user_data_dir()));
-
-#if defined(OS_LINUX)
-    // Make sure the cache directory is inside our clear profile. Otherwise
-    // the cache may contain data from earlier tests that could break the
-    // current test.
-    //
-    // Note: we use an environment variable here, because we have to pass the
-    // value to the child process. This is the simplest way to do it.
-    scoped_ptr<base::Environment> env(base::Environment::Create());
-    env->SetVar("XDG_CACHE_HOME", user_data_dir().value());
-#endif
   }
 
   if (!template_user_data_.empty()) {