Revert of Reduce plugin_metrics_provider_ usage in MetricsService (https://codereview.chromium.org/308433004/)

Reason for revert:
This CL seems to cause bot failure on CI:
http://build.chromium.org/p/chromium.memory/builders/Linux%20ASan%20LSan%20Tests%20%281%29/builds/2745

Original issue's description:
> Reduce plugin_metrics_provider_ usage in MetricsService
> 
> This CL eliminates MetricsService's call to
> PluginMetricsProvider::RecordPluginChanges (replaced by a new API on
> MetricsProvider). It additionally adds a
> MetricsServicesManager::OnPluginLoadingError() API and has the plugin observer
> call that API rather than calling MetricsService directly. This change will
> enable easily moving MetricsService::LogPluginLoadingError() to
> ChromeMetricsServiceClient once the latter is the class that keeps a weak
> pointer to the plugin metrics provider.
> 
> BUG=375776
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=274403

TBR=asvitkine@chromium.org,isherman@chromium.org,jochen@chromium.org,blundell@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=375776

Review URL: https://codereview.chromium.org/314583002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@274418 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 0 insertions, 5 deletions

diff --git a/chrome/browser/browser_process.h b/chrome/browser/browser_process.h
index cda9e23..8e46d93 100644
--- a/chrome/browser/browser_process.h
+++ b/chrome/browser/browser_process.h
@@ -29,7 +29,6 @@ class IntranetRedirectDetector;
 class IOThread;
 class MediaFileSystemRegistry;
 class MetricsService;
-class MetricsServicesManager;
 class NetworkTimeTracker;
 class NotificationUIManager;
 class PrefRegistrySimple;
@@ -103,10 +102,6 @@ class BrowserProcess {
   // continue shutdown.
   virtual void EndSession() = 0;
 
-  // Gets the manager for the various metrics-related services, constructing it
-  // if necessary.
-  virtual MetricsServicesManager* GetMetricsServicesManager() = 0;
-
   // Services: any of these getters may return NULL
   virtual MetricsService* metrics_service() = 0;
   virtual rappor::RapporService* rappor_service() = 0;