Revert of Introduce mojo interface for collecting StackSamplingProfiler data

components/metrics/public/interfaces/call_stack_profile_collector.mojom

Index: components/metrics/public/interfaces/call_stack_profile_collector.mojom
diff --git a/components/metrics/public/interfaces/call_stack_profile_collector.mojom b/components/metrics/public/interfaces/call_stack_profile_collector.mojom
deleted file mode 100644
index 80e9ac3ccc308515134335c1e3717ccdcfc411d3..0000000000000000000000000000000000000000
--- a/components/metrics/public/interfaces/call_stack_profile_collector.mojom
+++ /dev/null
@@ -1,40 +0,0 @@
-// 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;
-
-import "mojo/common/common_custom_types.mojom";
-
-// These structs mirror the corresponding types in base::StackSamplingProfiler.
-
-struct CallStackModule {
-  uint64 base_address;
-  string id;
-  mojo.common.mojom.FilePath filename;
-};
-
-struct CallStackFrame {
-  uint64 instruction_pointer;
-  uint64 module_index;
-};
-
-struct CallStackProfile {
-  array<CallStackModule> modules;
-  array<array<CallStackFrame>> samples;
-  mojo.common.mojom.TimeDelta profile_duration;
-  mojo.common.mojom.TimeDelta sampling_period;
-};
-
-enum Trigger {
-  UNKNOWN,
-  PROCESS_STARTUP,
-  JANKY_TASK,
-  THREAD_HUNG,
-};
-
-interface CallStackProfileCollector {
-  Collect(Trigger trigger, bool preserve_sample_ordering,
-          mojo.common.mojom.TimeTicks start_timestamp,
-          array<CallStackProfile> profiles);
-};