Postmortem report collection: validate internal state

base/debug/activity_analyzer.cc

Index: base/debug/activity_analyzer.cc
diff --git a/base/debug/activity_analyzer.cc b/base/debug/activity_analyzer.cc
index 7c421e9630922a9135baae81bae052d3e21fb7d7..db3334eebefbb2a83d14265cc7bc614299dfe9ab 100644
--- a/base/debug/activity_analyzer.cc
+++ b/base/debug/activity_analyzer.cc
@@ -4,6 +4,8 @@
 
 #include "base/debug/activity_analyzer.h"
 
+#include <utility>
+
 #include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/files/memory_mapped_file.h"
@@ -54,7 +56,9 @@ void ThreadActivityAnalyzer::AddGlobalInformation(
 
 GlobalActivityAnalyzer::GlobalActivityAnalyzer(
     std::unique_ptr<PersistentMemoryAllocator> allocator)
-    : allocator_(std::move(allocator)), allocator_iterator_(allocator_.get()) {}
+    : allocator_(std::move(allocator)), allocator_iterator_(allocator_.get()) {
+  DCHECK(allocator_);
+}
 
 GlobalActivityAnalyzer::~GlobalActivityAnalyzer() {}