Update from https://crrev.com/327068

base/trace_event/memory_dump_provider.cc

Index: base/trace_event/memory_dump_provider.cc
diff --git a/base/trace_event/memory_dump_provider.cc b/base/trace_event/memory_dump_provider.cc
index 9518461dcf77906c8502d187410f53ba23755db0..a2d38897fda52b7e90233aba5a4928ba4234471c 100644
--- a/base/trace_event/memory_dump_provider.cc
+++ b/base/trace_event/memory_dump_provider.cc
@@ -4,7 +4,7 @@
 
 #include "base/trace_event/memory_dump_provider.h"
 
-#include "base/logging.h"
+#include "base/single_thread_task_runner.h"
 
 namespace base {
 namespace trace_event {
@@ -12,15 +12,20 @@ namespace trace_event {
 MemoryDumpProvider::MemoryDumpProvider() {
 }
 
+MemoryDumpProvider::MemoryDumpProvider(
+    const scoped_refptr<SingleThreadTaskRunner>& task_runner)
+    : task_runner_(task_runner) {
+}
+
 MemoryDumpProvider::~MemoryDumpProvider() {
 }
 
 void MemoryDumpProvider::DeclareAllocatorAttribute(
-    const MemoryAllocatorDeclaredAttribute& attr) {
-  DCHECK_EQ(0u, allocator_attributes_.count(attr.name))
-      << "Allocator attribute " << attr.name << " already declared for dumper "
-      << GetFriendlyName();
-  allocator_attributes_[attr.name] = attr;
+    const std::string& allocator_name,
+    const std::string& attribute_name,
+    const std::string& attribute_type) {
+  allocator_attributes_type_info_.Set(
+      allocator_name, attribute_name, attribute_type);
 }
 
 }  // namespace trace_event