[Win] Create ModuleWatcher.

chrome/common/conflicts/module_event_win.mojom

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+module mojom;
+
+// The types of module events that can occur.
+enum ModuleEventType {
+  // A module was already loaded, but its presence is being observed.
+  MODULE_ALREADY_LOADED,
+  // A module is in the process of being loaded.
+  MODULE_LOADED,
+  // A module is in the process of being unloaded.
+  MODULE_UNLOADED,
+};
+
+// A notification about a module being loaded or unloaded.
+struct ModuleEvent {
+  // The type of event.
+  ModuleEventType event_type;
+  // The full path to the module being loaded or unloaded.
+  string module_path;
+  // The load address of the module, in an integer form. This is 64-bit so that

[grt (UTC plus 2), 2016/11/10 08:52:12]

nit: "in an integer form" is superfluous. i'm not really a fan of the second
sentence. i'm not sure it needs to be stated.

[chrisha, 2016/11/14 16:06:44]

Done.

+  // it works on both platforms.
+  uint64 load_address;
+  // The size of the module in memory, in bytes.
+  uint32 size;
+};