components/metrics: Add runtime memory leak detector

components/metrics.gypi

Index: components/metrics.gypi
diff --git a/components/metrics.gypi b/components/metrics.gypi
index 36e8e57025e144db0c0486d5e7b7e2c602653db2..cf9d74bb810c9031e11ec554cf5c0ea43c996f88 100644
--- a/components/metrics.gypi
+++ b/components/metrics.gypi
@@ -104,6 +104,36 @@
       ],
     },
     {
+      'target_name': 'metrics_leak_detector',
+      'type': 'static_library',
+      'include_dirs': [
+        # In these modules, the tcmalloc include path does not take precendence
+        # over the top-level chromium path.
+        '..',
+        '../third_party/tcmalloc/chromium/src',
+      ],
+      'dependencies': [
+        '../base/base.gyp:base',
+        '../base/allocator/allocator.gyp:allocator',
+      ],
+      'sources': [
+        'metrics/leak_detector/call_stack_manager.cc',
+        'metrics/leak_detector/call_stack_manager.h',
+        'metrics/leak_detector/call_stack_table.cc',
+        'metrics/leak_detector/call_stack_table.h',
+        'metrics/leak_detector/custom_allocator.cc',
+        'metrics/leak_detector/custom_allocator.h',
+        'metrics/leak_detector/leak_analyzer.cc',
+        'metrics/leak_detector/leak_analyzer.h',
+        'metrics/leak_detector/leak_detector_impl.cc',
+        'metrics/leak_detector/leak_detector_impl.h',
+        'metrics/leak_detector/leak_detector_value_type.cc',
+        'metrics/leak_detector/leak_detector_value_type.h',
+        'metrics/leak_detector/ranked_list.cc',
+        'metrics/leak_detector/ranked_list.h',
+      ],
+    },
+    {
       # GN version: //components/metrics:net
       'target_name': 'metrics_net',
       'type': 'static_library',