Eliminate //chrome dependencies from MetricsServicesManager

components/metrics/metrics_service_client.h

 // Copyright 2014 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 COMPONENTS_METRICS_METRICS_SERVICE_CLIENT_H_
 #define COMPONENTS_METRICS_METRICS_SERVICE_CLIENT_H_
 
 #include <stdint.h>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/callback_forward.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "base/time/time.h"
 #include "components/metrics/proto/system_profile.pb.h"
 
+namespace base {
+class FilePath;
+}
+
 namespace metrics {
 
 class MetricsLogUploader;
+class MetricsService;
 
 // An abstraction of operations that depend on the embedder's (e.g. Chrome)
 // environment.
 class MetricsServiceClient {
  public:
   virtual ~MetricsServiceClient() {}
 
+  // Returns the MetricsService instance that this client is associated with.
+  // With the exception of testing contexts, the returned instance must be valid
+  // for the lifetime of this object (typically, the embedder's client
+  // implementation will own the MetricsService instance being returned).
+  virtual metrics::MetricsService* GetMetricsService() = 0;

[Alexei Svitkine (slow), 2015/10/20 15:02:20]

Nit: Remove metrics:: since this is in it.

+
   // Registers the client id with other services (e.g. crash reporting), called
   // when metrics recording gets enabled.
   virtual void SetMetricsClientId(const std::string& client_id) = 0;
 
   // Notifies the client that recording is disabled, so that other services
   // (such as crash reporting) can clear any association with metrics.
   virtual void OnRecordingDisabled() = 0;
 
   // Whether there's an "off the record" (aka "Incognito") session active.
   virtual bool IsOffTheRecordSessionActive() = 0;
@@ skipping 34 matching lines @@
   // MetricsLogUploader for details).
   virtual scoped_ptr<MetricsLogUploader> CreateUploader(
       const base::Callback<void(int)>& on_upload_complete) = 0;
 
   // Returns the standard interval between upload attempts.
   virtual base::TimeDelta GetStandardUploadInterval() = 0;
 
   // Returns the name of a key under HKEY_CURRENT_USER that can be used to store
   // backups of metrics data. Unused except on Windows.
   virtual base::string16 GetRegistryBackupKey();
+
+  // Called on plugin loading errors.
+  virtual void OnPluginLoadingError(const base::FilePath& plugin_path) {}
 };
 
 }  // namespace metrics
 
 #endif  // COMPONENTS_METRICS_METRICS_SERVICE_CLIENT_H_