components/metrics: Add runtime memory leak detector

base/allocator/BUILD.gn

Index: base/allocator/BUILD.gn
diff --git a/base/allocator/BUILD.gn b/base/allocator/BUILD.gn
index c42de1a01a38900bdbf8e23029ffeb9b78441c61..12a7aa695f6868a931d4e72a8c30b82b44676095 100644
--- a/base/allocator/BUILD.gn
+++ b/base/allocator/BUILD.gn
@@ -73,6 +73,8 @@ if (use_allocator == "tcmalloc") {
       "$tcmalloc_dir/src/base/atomicops.h",
       "$tcmalloc_dir/src/base/basictypes.h",
       "$tcmalloc_dir/src/base/commandlineflags.h",
+      "$tcmalloc_dir/src/base/custom_allocator.cc",
+      "$tcmalloc_dir/src/base/custom_allocator.h",
       "$tcmalloc_dir/src/base/cycleclock.h",
 
       # We don't list dynamic_annotations.c since its copy is already
@@ -103,8 +105,12 @@ if (use_allocator == "tcmalloc") {
 
       # #included by debugallocation_shim.cc
       #"$tcmalloc_dir/src/debugallocation.cc",
+      "$tcmalloc_dir/src/call_stack_table.cc",
+      "$tcmalloc_dir/src/call_stack_table.h",
       "$tcmalloc_dir/src/deep-heap-profile.cc",
       "$tcmalloc_dir/src/deep-heap-profile.h",
+      "$tcmalloc_dir/src/farmhash.cc",
+      "$tcmalloc_dir/src/farmhash.h",
       "$tcmalloc_dir/src/free_list.cc",
       "$tcmalloc_dir/src/free_list.h",
       "$tcmalloc_dir/src/heap-profile-table.cc",
@@ -112,6 +118,9 @@ if (use_allocator == "tcmalloc") {
       "$tcmalloc_dir/src/heap-profiler.cc",
       "$tcmalloc_dir/src/internal_logging.cc",
       "$tcmalloc_dir/src/internal_logging.h",
+      "$tcmalloc_dir/src/leak_detector.cc",
+      "$tcmalloc_dir/src/leak_detector_impl.cc",
+      "$tcmalloc_dir/src/leak_detector_impl.h",
       "$tcmalloc_dir/src/linked_list.h",
       "$tcmalloc_dir/src/malloc_extension.cc",
       "$tcmalloc_dir/src/malloc_hook-inl.h",