A deeper heap profile dumper in third_party/tcmalloc/chromium.

third_party/tcmalloc/chromium/src/malloc_hook.cc

Index: third_party/tcmalloc/chromium/src/malloc_hook.cc
diff --git a/third_party/tcmalloc/chromium/src/malloc_hook.cc b/third_party/tcmalloc/chromium/src/malloc_hook.cc
index f6af7d816179e91afabcc6838ad5fbb99ec1791e..e46d1be888afa4006ac0e7016e2982152c25e5ff 100644
--- a/third_party/tcmalloc/chromium/src/malloc_hook.cc
+++ b/third_party/tcmalloc/chromium/src/malloc_hook.cc
@@ -71,6 +71,8 @@
 
 using std::copy;
 
+DECLARE_bool(deep_heap_profile);
+
 
 // Declaration of default weak initialization function, that can be overridden
 // by linking-in a strong definition (as heap-checker.cc does).  This is
@@ -677,7 +679,9 @@ extern "C" int MallocHook_GetCallerStackTrace(void** result, int max_depth,
     if (InHookCaller(stack[i])) {
       RAW_VLOG(10, "Found hooked allocator at %d: %p <- %p",
                    i, stack[i], stack[i+1]);
-      i += 1;  // skip hook caller frame
+      if (!FLAGS_deep_heap_profile) {
+        i += 1;  // skip hook caller frame
+      }
       depth -= i;  // correct depth
       if (depth > max_depth) depth = max_depth;
       copy(stack + i, stack + i + depth, result);