[tracing] Switch to new heap dump format.

third_party/WebKit/Source/platform/instrumentation/tracing/web_process_memory_dump.cc

Index: third_party/WebKit/Source/platform/instrumentation/tracing/web_process_memory_dump.cc
diff --git a/third_party/WebKit/Source/platform/instrumentation/tracing/web_process_memory_dump.cc b/third_party/WebKit/Source/platform/instrumentation/tracing/web_process_memory_dump.cc
index 6049d65ca3295fd8a8001ca64f52c58333ad6713..b3eee7d4a903801d7e54c8c43506ccd15fc9b276 100644
--- a/third_party/WebKit/Source/platform/instrumentation/tracing/web_process_memory_dump.cc
+++ b/third_party/WebKit/Source/platform/instrumentation/tracing/web_process_memory_dump.cc
@@ -7,7 +7,6 @@
 #include "base/memory/discardable_memory.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/stringprintf.h"
-#include "base/trace_event/heap_profiler_heap_dump_writer.h"
 #include "base/trace_event/process_memory_dump.h"
 #include "base/trace_event/trace_event_argument.h"
 #include "base/trace_event/trace_event_memory_overhead.h"
@@ -174,14 +173,4 @@ WebProcessMemoryDump::CreateDiscardableMemoryAllocatorDump(
   return CreateWebMemoryAllocatorDump(dump);
 }
 
-void WebProcessMemoryDump::DumpHeapUsage(
-    const std::unordered_map<base::trace_event::AllocationContext,
-                             base::trace_event::AllocationMetrics>&
-        metrics_by_context,
-    base::trace_event::TraceEventMemoryOverhead& overhead,
-    const char* allocator_name) {
-  process_memory_dump_->DumpHeapUsage(metrics_by_context, overhead,
-                                      allocator_name);
-}
-
 }  // namespace content