base: rename Environment::SetEnv to Environment::SetVar.

net/proxy/proxy_config_service_linux_unittest.cc

Index: net/proxy/proxy_config_service_linux_unittest.cc
diff --git a/net/proxy/proxy_config_service_linux_unittest.cc b/net/proxy/proxy_config_service_linux_unittest.cc
index 6be44fe4a9752336ff9044337ab187164ff03ba6..74eddc83782860f2aaee7088767941863af105ad 100644
--- a/net/proxy/proxy_config_service_linux_unittest.cc
+++ b/net/proxy/proxy_config_service_linux_unittest.cc
@@ -115,7 +115,7 @@ class MockEnvironment : public base::Environment {
     return false;
   }
 
-  virtual bool SetEnv(const char* variable_name, const std::string& new_value) {
+  virtual bool SetVar(const char* variable_name, const std::string& new_value) {
     ADD_FAILURE();
     return false;
   }