[instrumentation]: Move probe subscriptions to JSON5 config file from PIDL.

third_party/WebKit/Source/platform/probe/PlatformProbes.pidl

Index: third_party/WebKit/Source/platform/probe/PlatformProbes.pidl
diff --git a/third_party/WebKit/Source/platform/probe/PlatformProbes.pidl b/third_party/WebKit/Source/platform/probe/PlatformProbes.pidl
index 5c1e4671f069fb3d2e0d0bcf5f8ad7cde2df66a8..d40e3614738a790de047123419c651374ba4bf94 100644
--- a/third_party/WebKit/Source/platform/probe/PlatformProbes.pidl
+++ b/third_party/WebKit/Source/platform/probe/PlatformProbes.pidl
@@ -3,12 +3,10 @@
 // found in the LICENSE file.
 
 interface PlatformProbes {
+  class FetchContext;
+  class ResourceRequest;
+  class ResourceResponse;
+  struct FetchInitiatorInfo;
 
-class FetchContext;
-class ResourceRequest;
-class ResourceResponse;
-struct FetchInitiatorInfo;
-
-    [PlatformTraceEvents]
-    PlatformSendRequest([Keep] FetchContext*, unsigned long identifier, ResourceRequest&, const ResourceResponse& redirectResponse, const FetchInitiatorInfo&);
+  PlatformSendRequest([Keep] FetchContext*, unsigned long identifier, ResourceRequest&, const ResourceResponse& redirectResponse, const FetchInitiatorInfo&);
 }