third_party/protobuf: Update to HEAD (f52e188fe4)

third_party/protobuf/src/google/protobuf/compiler/java/java_extension.cc

Index: third_party/protobuf/src/google/protobuf/compiler/java/java_extension.cc
diff --git a/third_party/protobuf/src/google/protobuf/compiler/java/java_extension.cc b/third_party/protobuf/src/google/protobuf/compiler/java/java_extension.cc
index 46b5faaa50945d9766bdbe6ae0d0878b7150abb8..cb237bf6d564d3124ce3a65d9dcd2aa81d88675d 100644
--- a/third_party/protobuf/src/google/protobuf/compiler/java/java_extension.cc
+++ b/third_party/protobuf/src/google/protobuf/compiler/java/java_extension.cc
@@ -61,12 +61,10 @@ ImmutableExtensionGenerator::ImmutableExtensionGenerator(
 ImmutableExtensionGenerator::~ImmutableExtensionGenerator() {}
 
 // Initializes the vars referenced in the generated code templates.
-void ExtensionGenerator::InitTemplateVars(const FieldDescriptor* descriptor,
-                                          const string& scope,
-                                          bool immutable,
-                                          ClassNameResolver* name_resolver,
-                                          map<string, string>* vars_pointer) {
-  map<string, string> &vars = *vars_pointer;
+void ExtensionGenerator::InitTemplateVars(
+    const FieldDescriptor* descriptor, const string& scope, bool immutable,
+    ClassNameResolver* name_resolver, std::map<string, string>* vars_pointer) {
+  std::map<string, string> &vars = *vars_pointer;
   vars["scope"] = scope;
   vars["name"] = UnderscoresToCamelCase(descriptor);
   vars["containing_type"] =
@@ -110,7 +108,7 @@ void ExtensionGenerator::InitTemplateVars(const FieldDescriptor* descriptor,
 }
 
 void ImmutableExtensionGenerator::Generate(io::Printer* printer) {
-  map<string, string> vars;
+  std::map<string, string> vars;
   const bool kUseImmutableNames = true;
   InitTemplateVars(descriptor_, scope_, kUseImmutableNames, name_resolver_,
                    &vars);