WIP: The tracing service prototype

content/public/app/mojo/content_browser_manifest.json

Index: content/public/app/mojo/content_browser_manifest.json
diff --git a/content/public/app/mojo/content_browser_manifest.json b/content/public/app/mojo/content_browser_manifest.json
index 888c43ecf34b30abb1dbffa8fc287307b4dedbd9..c55802623d160e13867426eebb7ad0282f509f42 100644
--- a/content/public/app/mojo/content_browser_manifest.json
+++ b/content/public/app/mojo/content_browser_manifest.json
@@ -7,10 +7,12 @@
         "gpu": [
           "content::mojom::FieldTrialRecorder",
           "media::mojom::AndroidOverlayProvider",
-          "memory_instrumentation::mojom::Coordinator"
+          "memory_instrumentation::mojom::Coordinator",
+          "resource_coordinator::tracing::mojom::AgentSet"
         ],
         "plugin": [
           "discardable_memory::mojom::DiscardableSharedMemoryManager",
+          "resource_coordinator::tracing::mojom::AgentSet",
           "ui::mojom::Gpu"
         ],
         "renderer": [
@@ -40,6 +42,7 @@
           "memory_instrumentation::mojom::Coordinator",
           "metrics::mojom::SingleSampleMetricsProvider",
           "payments::mojom::PaymentManager",
+          "resource_coordinator::tracing::mojom::AgentSet",
           "shape_detection::mojom::BarcodeDetection",
           "shape_detection::mojom::FaceDetectionProvider",
           "shape_detection::mojom::TextDetection",
@@ -49,7 +52,8 @@
           "service_manager::mojom::ServiceFactory"
         ],
         "utility": [
-          "memory_instrumentation::mojom::Coordinator"
+          "memory_instrumentation::mojom::Coordinator",
+          "resource_coordinator::tracing::mojom::AgentSet"
         ]
       },
       "requires": {
@@ -78,7 +82,8 @@
           "barcode_detection",
           "face_detection",
           "text_detection"
-        ]
+        ],
+        "tracing": [ "coordinator" ]
       }
     },
     "navigation:frame": {