Revert of Mojo interface/service for Leak Detector on remote process

components/metrics/leak_detector/leak_detector.mojom

-// Copyright 2016 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.
-
-module metrics.mojom;
-
-struct LeakDetectorParams {
-  float sampling_rate;
-  uint32 max_stack_depth;
-  uint64 analysis_interval_bytes;
-  uint32 size_suspicion_threshold;
-  uint32 call_stack_suspicion_threshold;
-};
-
-struct AllocationBreakdown {
-  array<uint32> counts_by_size;
-  uint32 count_for_call_stack;
-};
-
-struct MemoryLeakReport {
-  uint32 size_bytes;
-  array<uint64> call_stack;
-
-  array<AllocationBreakdown> alloc_breakdown_history;
-};
-
-// Provides a remote interface for enabling LeakDetector on remote processes.
-interface LeakDetector {
-  // Returns a LeakDetectorParams struct. Used to indicate to the remote process
-  // what parameters to use when initializing LeakDetector. Can also return
-  // |params.sampling_rate| == 0 to indicate that LeakDetector should not be
-  // initialized on a particular process.
-  GetParams() => (LeakDetectorParams params);
-
-  // When a remote process running LeakDetector gets some leak reports, it
-  // should call this function to return the leak reports back to the main
-  // process that implements this function. The reports should be sent back as
-  // an array of serialized MemoryLeakReportProtos.
-  SendLeakReports(array<MemoryLeakReport> reports);
-};