[tracing] Track number of allocations in heap profiler

third_party/WebKit/public/platform/WebProcessMemoryDump.h

Index: third_party/WebKit/public/platform/WebProcessMemoryDump.h
diff --git a/third_party/WebKit/public/platform/WebProcessMemoryDump.h b/third_party/WebKit/public/platform/WebProcessMemoryDump.h
index 6e71cc009d31c2dfe1b6a98a2e3294c869468802..c3cf99f01fb6107dd109dc4b6e4bf3645bb27b29 100644
--- a/third_party/WebKit/public/platform/WebProcessMemoryDump.h
+++ b/third_party/WebKit/public/platform/WebProcessMemoryDump.h
@@ -90,7 +90,7 @@ public:
 
     // Dumps heap memory usage. |allocatorName| is used as an absolute name for
     // base::trace_event::ProcessMemoryDump::AddHeapDump.
-    virtual void dumpHeapUsage(const base::hash_map<base::trace_event::AllocationContext, size_t>& bytesByContext, base::trace_event::TraceEventMemoryOverhead&, const char* allocatorName) = 0;
+    virtual void dumpHeapUsage(const base::hash_map<base::trace_event::AllocationContext, base::trace_event::AllocationMetrics>& metricsByContext, base::trace_event::TraceEventMemoryOverhead&, const char* allocatorName) = 0;
 };
 
 } // namespace blink