[BackgroundSync] Componentize BackgroundSyncMetrics.

Pre-work for this has been done in:
https://chromium-review.googlesource.com/c/chromium/src/+/2443089

This moves BackgroundSyncMetrics to components and updates references.

Bug: 1087486
Change-Id: I175de6d5ff224ba2e9f590234b98bd4a2de952e2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2445874
Commit-Queue: Mugdha Lakhani <nator@chromium.org>
Reviewed-by: Rayan Kanso <rayankans@chromium.org>
Reviewed-by: Mike West <mkwst@chromium.org>
Cr-Commit-Position: refs/heads/master@{#814598}

chrome/browser/BUILD.gn

@@ -165,8 +165,6 @@ static_library("browser") {
     "background_sync/background_sync_controller_impl.h",
     "background_sync/background_sync_delegate_impl.cc",
     "background_sync/background_sync_delegate_impl.h",
-    "background_sync/background_sync_metrics.cc",
-    "background_sync/background_sync_metrics.h",
     "background_sync/periodic_background_sync_permission_context.cc",
     "background_sync/periodic_background_sync_permission_context.h",
     "bad_message.cc",

chrome/browser/background_sync/background_sync_controller_impl.h

@@ -14,9 +14,9 @@
 #include "base/macros.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
-#include "chrome/browser/background_sync/background_sync_metrics.h"
 #include "chrome/browser/engagement/site_engagement_observer.h"
 #include "components/background_sync/background_sync_delegate.h"
+#include "components/background_sync/background_sync_metrics.h"
 #include "components/content_settings/core/browser/content_settings_observer.h"
 #include "components/keep_alive_registry/keep_alive_types.h"
 #include "components/keep_alive_registry/scoped_keep_alive.h"

chrome/browser/background_sync/background_sync_metrics_browsertest.cc

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/browser/background_sync/background_sync_metrics.h"
+#include "components/background_sync/background_sync_metrics.h"
 
 #include <memory>
 

components/background_sync/BUILD.gn

@@ -5,6 +5,8 @@
 static_library("background_sync") {
   sources = [
     "background_sync_delegate.h",
+    "background_sync_metrics.cc",
+    "background_sync_metrics.h",
     "background_sync_permission_context.cc",
     "background_sync_permission_context.h",
   ]
@@ -13,6 +15,7 @@ static_library("background_sync") {
     "//components/content_settings/core/browser",
     "//components/content_settings/core/common",
     "//components/permissions",
+    "//services/metrics/public/cpp:ukm_builders",
     "//third_party/blink/public/common:headers",
   ]
 }

components/background_sync/DEPS

@@ -4,5 +4,5 @@ include_rules = [
   "+content/public/browser",
   "+content/public/test",
   "+services/metrics/public",
-  "+third_party/blink/public/mojom",
+  "+third_party/blink/public",
 ]

chrome/browser/background_sync/background_sync_metrics.cc → components/background_sync/background_sync_metrics.cc

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/browser/background_sync/background_sync_metrics.h"
+#include "components/background_sync/background_sync_metrics.h"
 
 #include "base/bind.h"
 #include "components/background_sync/background_sync_delegate.h"

chrome/browser/background_sync/background_sync_metrics.h → components/background_sync/background_sync_metrics.h

@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_BROWSER_BACKGROUND_SYNC_BACKGROUND_SYNC_METRICS_H_
-#define CHROME_BROWSER_BACKGROUND_SYNC_BACKGROUND_SYNC_METRICS_H_
+#ifndef COMPONENTS_BACKGROUND_SYNC_BACKGROUND_SYNC_METRICS_H_
+#define COMPONENTS_BACKGROUND_SYNC_BACKGROUND_SYNC_METRICS_H_
 
 #include "base/callback.h"
 #include "base/macros.h"
@@ -87,4 +87,4 @@ class BackgroundSyncMetrics {
   DISALLOW_COPY_AND_ASSIGN(BackgroundSyncMetrics);
 };
 
-#endif  // CHROME_BROWSER_BACKGROUND_SYNC_BACKGROUND_SYNC_METRICS_H_
+#endif  // COMPONENTS_BACKGROUND_SYNC_BACKGROUND_SYNC_METRICS_H_