Add the ThirdPartyModules.Uninstallable histogram.

chrome/browser/conflicts/module_database_win.h

 // Copyright 2017 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.
 
 #ifndef CHROME_BROWSER_CONFLICTS_MODULE_DATABASE_WIN_H_
 #define CHROME_BROWSER_CONFLICTS_MODULE_DATABASE_WIN_H_
 
 #include <map>
 #include <memory>
 #include <utility>
 #include <vector>
 
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
+#include "base/observer_list.h"
 #include "base/sequenced_task_runner.h"
 #include "chrome/browser/conflicts/module_info_win.h"
 #include "chrome/browser/conflicts/module_inspector_win.h"
+#include "chrome/browser/conflicts/third_party_metrics_recorder_win.h"
 #include "content/public/common/process_type.h"
 
+class ModuleDatabaseObserver;
+
 // A class that keeps track of all modules loaded across Chrome processes.
 // Drives the chrome://conflicts UI.
 //
 // This is effectively a singleton, but doesn't use base::Singleton. The intent
 // is for the object to be created when Chrome is single-threaded, and for it
 // be set as the process-wide singleton via SetInstance.
 class ModuleDatabase {
  public:
   // Structures for maintaining information about modules.
   using ModuleMap = std::map<ModuleInfoKey, ModuleInfoData>;
@@ skipping 50 matching lines @@
                       uintptr_t module_load_address);
 
   // Indicates that the given process has ended. This can be called from any
   // thread and will be bounced to the |task_runner_|. In practice it will be
   // invoked from the UI thread as the Mojo channel is torn down.
   void OnProcessEnded(uint32_t process_id, uint64_t creation_time);
 
   // TODO(chrisha): Module analysis code, and various accessors for use by
   // chrome://conflicts.
 
+  // Adds or removes an observer.
+  void AddObserver(ModuleDatabaseObserver* observer);
+  void RemoveObserver(ModuleDatabaseObserver* observer);
+
  private:
   friend class TestModuleDatabase;
   friend class ModuleDatabaseTest;
   friend class ModuleEventSinkImplTest;
 
   // Used by the FindLoadAddress* functions to indicate a load address has not
   // been found.
   static constexpr size_t kInvalidIndex = ~0u;
 
   // Converts a valid |process_type| to a bit for use in a bitmask of process
@@ skipping 53 matching lines @@
   // A map of all known modules.
   ModuleMap modules_;
 
   // Inspects new modules on a blocking task runner.
   ModuleInspector module_inspector_;
 
   // A map of all known running processes, and modules loaded/unloaded in
   // them.
   ProcessMap processes_;
 
+  base::ObserverList<ModuleDatabaseObserver> observer_list_;
+
+  ThirdPartyMetricsRecorder third_party_metrics_;
+
   // Weak pointer factory for this object. This is used when bouncing
   // incoming events to |task_runner_|.
   base::WeakPtrFactory<ModuleDatabase> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ModuleDatabase);
 };
 
 // Information about a running process. This ties modules in a ModuleSet to
 // processes in which they are (or have been) loaded.
 
@@ skipping 33 matching lines @@
   //
   // These are modified by the various static *LoadAddress* helper functions in
   // ModuleDatabase. The vector maintains the invariant the element with maximum
   // module ID is always last. This ensures that the usual operation of loading
   // a module is O(1).
   ModuleLoadAddresses loaded_modules;
   ModuleLoadAddresses unloaded_modules;
 };
 
 #endif  // CHROME_BROWSER_CONFLICTS_MODULE_DATABASE_WIN_H_