Rename the PolicyManager to UpdateManager.

This change renames the PolicyManager class, directory, tests, etc,
to avoid confusion with libpolicy and its classes.

BUG=chromium:373551
TEST=emerged on link.
CQ-DEPEND=CL:I43081673c7ba409f02273197da7915537bde39c6

Change-Id: Iffa76caa3b95ecbbdba87ab01006d1d8ce35a27f
Reviewed-on: https://chromium-review.googlesource.com/201876
Tested-by: Alex Deymo <deymo@chromium.org>
Reviewed-by: David Zeuthen <zeuthen@chromium.org>
Commit-Queue: Alex Deymo <deymo@chromium.org>
diff --git a/update_manager/real_shill_provider.h b/update_manager/real_shill_provider.h
new file mode 100644
index 0000000..df4f622
--- /dev/null
+++ b/update_manager/real_shill_provider.h
@@ -0,0 +1,97 @@
+// Copyright (c) 2014 The Chromium OS 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 CHROMEOS_PLATFORM_UPDATE_ENGINE_UPDATE_MANAGER_REAL_SHILL_PROVIDER_H_
+#define CHROMEOS_PLATFORM_UPDATE_ENGINE_UPDATE_MANAGER_REAL_SHILL_PROVIDER_H_
+
+// TODO(garnold) Much of the functionality in this module was adapted from the
+// update engine's connection_manager.  We need to make sure to deprecate use of
+// connection manager when the time comes.
+
+#include <string>
+
+#include <base/time/time.h>
+
+#include "update_engine/clock_interface.h"
+#include "update_engine/dbus_wrapper_interface.h"
+#include "update_engine/update_manager/generic_variables.h"
+#include "update_engine/update_manager/shill_provider.h"
+
+using chromeos_update_engine::ClockInterface;
+using chromeos_update_engine::DBusWrapperInterface;
+
+namespace chromeos_update_manager {
+
+// ShillProvider concrete implementation.
+class RealShillProvider : public ShillProvider {
+ public:
+  RealShillProvider(DBusWrapperInterface* dbus, ClockInterface* clock)
+      : dbus_(dbus), clock_(clock) {}
+
+  virtual ~RealShillProvider();
+
+  // Initializes the provider and returns whether it succeeded.
+  bool Init();
+
+  virtual Variable<bool>* var_is_connected() override {
+    return &var_is_connected_;
+  }
+
+  virtual Variable<ConnectionType>* var_conn_type() override {
+    return &var_conn_type_;
+  }
+
+  virtual Variable<ConnectionTethering>* var_conn_tethering() override {
+    return &var_conn_tethering_;
+  }
+
+  virtual Variable<base::Time>* var_conn_last_changed() override {
+    return &var_conn_last_changed_;
+  }
+
+  // Helper methods for converting shill strings into symbolic values.
+  static ConnectionType ParseConnectionType(const char* type_str);
+  static ConnectionTethering ParseConnectionTethering(
+      const char* tethering_str);
+
+ private:
+  // Return a DBus proxy for a given |path| and |interface| within shill.
+  DBusGProxy* GetProxy(const char* path, const char* interface);
+
+  // Issues a GetProperties call through a given |proxy|, storing the result to
+  // |*result_p|. Returns true on success.
+  bool GetProperties(DBusGProxy* proxy, GHashTable** result_p);
+
+  // Process a default connection value, update last change time as needed.
+  bool ProcessDefaultService(GValue* value);
+
+  // A handler for manager PropertyChanged signal, and a static version.
+  void HandlePropertyChanged(DBusGProxy* proxy, const char *name,
+                             GValue* value);
+  static void HandlePropertyChangedStatic(DBusGProxy* proxy, const char* name,
+                                          GValue* value, void* data);
+
+  // The current default service path, if connected.
+  std::string default_service_path_;
+
+  // The DBus interface (mockable), connection, and a shill manager proxy.
+  DBusWrapperInterface* const dbus_;
+  DBusGConnection* connection_ = NULL;
+  DBusGProxy* manager_proxy_ = NULL;
+
+  // A clock abstraction (mockable).
+  ClockInterface* const clock_;
+
+  // The provider's variables.
+  AsyncCopyVariable<bool> var_is_connected_{"is_connected"};
+  AsyncCopyVariable<ConnectionType> var_conn_type_{"conn_type"};
+  AsyncCopyVariable<ConnectionTethering> var_conn_tethering_{"conn_tethering"};
+  AsyncCopyVariable<base::Time> var_conn_last_changed_{"conn_last_changed"};
+
+  DISALLOW_COPY_AND_ASSIGN(RealShillProvider);
+};
+
+}  // namespace chromeos_update_manager
+
+#endif  // CHROMEOS_PLATFORM_UPDATE_ENGINE_UPDATE_MANAGER_REAL_SHILL_PROVIDER_H_