1 files changed, 0 insertions, 132 deletions
diff --git a/base/trace_event/heap_profiler_allocation_context.h b/base/trace_event/heap_profiler_allocation_context.h
deleted file mode 100644
index c35663fb10..0000000000
--- a/base/trace_event/heap_profiler_allocation_context.h
+++ /dev/null
@@ -1,132 +0,0 @@
-// Copyright 2015 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.
-
-#ifndef BASE_TRACE_EVENT_HEAP_PROFILER_ALLOCATION_CONTEXT_H_
-#define BASE_TRACE_EVENT_HEAP_PROFILER_ALLOCATION_CONTEXT_H_
-
-#include <stddef.h>
-#include <stdint.h>
-
-#include <functional>
-
-#include "base/base_export.h"
-
-namespace base {
-namespace trace_event {
-
-// When heap profiling is enabled, tracing keeps track of the allocation
-// context for each allocation intercepted. It is generated by the
-// |AllocationContextTracker| which keeps stacks of context in TLS.
-// The tracker is initialized lazily.
-
-// The backtrace in the allocation context is a snapshot of the stack. For now,
-// this is the pseudo stack where frames are created by trace event macros. In
-// the future, we might add the option to use the native call stack. In that
-// case, |Backtrace| and |AllocationContextTracker::GetContextSnapshot| might
-// have different implementations that can be selected by a compile time flag.
-
-// The number of stack frames stored in the backtrace is a trade off between
-// memory used for tracing and accuracy. Measurements done on a prototype
-// revealed that:
-//
-// - In 60 percent of the cases, pseudo stack depth <= 7.
-// - In 87 percent of the cases, pseudo stack depth <= 9.
-// - In 95 percent of the cases, pseudo stack depth <= 11.
-//
-// See the design doc (https://goo.gl/4s7v7b) for more details.
-
-// Represents (pseudo) stack frame. Used in Backtrace class below.
-//
-// Conceptually stack frame is identified by its value, and type is used
-// mostly to properly format the value. Value is expected to be a valid
-// pointer from process' address space.
-struct BASE_EXPORT StackFrame {
-  enum class Type {
-    TRACE_EVENT_NAME,   // const char* string
-    THREAD_NAME,        // const char* thread name
-    PROGRAM_COUNTER,    // as returned by stack tracing (e.g. by StackTrace)
-  };
-
-  static StackFrame FromTraceEventName(const char* name) {
-    return {Type::TRACE_EVENT_NAME, name};
-  }
-  static StackFrame FromThreadName(const char* name) {
-    return {Type::THREAD_NAME, name};
-  }
-  static StackFrame FromProgramCounter(const void* pc) {
-    return {Type::PROGRAM_COUNTER, pc};
-  }
-
-  Type type;
-  const void* value;
-};
-
-bool BASE_EXPORT operator < (const StackFrame& lhs, const StackFrame& rhs);
-bool BASE_EXPORT operator == (const StackFrame& lhs, const StackFrame& rhs);
-bool BASE_EXPORT operator != (const StackFrame& lhs, const StackFrame& rhs);
-
-struct BASE_EXPORT Backtrace {
-  Backtrace();
-
-  // If the stack is higher than what can be stored here, the top frames
-  // (the ones further from main()) are stored. Depth of 12 is enough for most
-  // pseudo traces (see above), but not for native traces, where we need more.
-  enum { kMaxFrameCount = 48 };
-  StackFrame frames[kMaxFrameCount];
-  size_t frame_count = 0;
-};
-
-bool BASE_EXPORT operator==(const Backtrace& lhs, const Backtrace& rhs);
-bool BASE_EXPORT operator!=(const Backtrace& lhs, const Backtrace& rhs);
-
-// The |AllocationContext| is context metadata that is kept for every allocation
-// when heap profiling is enabled. To simplify memory management for book-
-// keeping, this struct has a fixed size.
-struct BASE_EXPORT AllocationContext {
-  AllocationContext();
-  AllocationContext(const Backtrace& backtrace, const char* type_name);
-
-  Backtrace backtrace;
-
-  // Type name of the type stored in the allocated memory. A null pointer
-  // indicates "unknown type". Grouping is done by comparing pointers, not by
-  // deep string comparison. In a component build, where a type name can have a
-  // string literal in several dynamic libraries, this may distort grouping.
-  const char* type_name;
-};
-
-bool BASE_EXPORT operator==(const AllocationContext& lhs,
-                            const AllocationContext& rhs);
-bool BASE_EXPORT operator!=(const AllocationContext& lhs,
-                            const AllocationContext& rhs);
-
-// Struct to store the size and count of the allocations.
-struct AllocationMetrics {
-  size_t size;
-  size_t count;
-};
-
-}  // namespace trace_event
-}  // namespace base
-
-namespace std {
-
-template <>
-struct BASE_EXPORT hash<base::trace_event::StackFrame> {
-  size_t operator()(const base::trace_event::StackFrame& frame) const;
-};
-
-template <>
-struct BASE_EXPORT hash<base::trace_event::Backtrace> {
-  size_t operator()(const base::trace_event::Backtrace& backtrace) const;
-};
-
-template <>
-struct BASE_EXPORT hash<base::trace_event::AllocationContext> {
-  size_t operator()(const base::trace_event::AllocationContext& context) const;
-};
-
-}  // namespace std
-
-#endif  // BASE_TRACE_EVENT_HEAP_PROFILER_ALLOCATION_CONTEXT_H_