components: Add out-of-line copy ctors for complex classes.

components/metrics/leak_detector/leak_detector_impl.cc

 // 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.
 
 #include "leak_detector_impl.h"
 
 #include <inttypes.h>
 #include <stddef.h>
 
 #include <algorithm>
@@ skipping 42 matching lines @@
 }
 
 size_t IndexToSize(size_t index) {
   return sizeof(uint32_t) * index;
 }
 
 }  // namespace
 
 LeakDetectorImpl::LeakReport::LeakReport() : alloc_size_bytes_(0) {}
 
+LeakDetectorImpl::LeakReport::LeakReport(const LeakReport& other) = default;
+
 LeakDetectorImpl::LeakReport::~LeakReport() {}
 
 bool LeakDetectorImpl::LeakReport::operator<(const LeakReport& other) const {
   if (alloc_size_bytes_ != other.alloc_size_bytes_)
     return alloc_size_bytes_ < other.alloc_size_bytes_;
   for (size_t i = 0; i < call_stack_.size() && i < other.call_stack_.size();
        ++i) {
     if (call_stack_[i] != other.call_stack_[i])
       return call_stack_[i] < other.call_stack_[i];
   }
@@ skipping 157 matching lines @@
 
 uintptr_t LeakDetectorImpl::GetOffset(const void* ptr) const {
   uintptr_t ptr_value = reinterpret_cast<uintptr_t>(ptr);
   if (ptr_value >= mapping_addr_ && ptr_value < mapping_addr_ + mapping_size_)
     return ptr_value - mapping_addr_;
   return ptr_value;
 }
 
 }  // namespace leak_detector
 }  // namespace metrics