[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 53a9d665cdb4c808eacef12d54fcd29df7b51068..f3618f84aa40bbfda9e70c0c65c2dd29f1a26db4 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 base::hash_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