[tracing] Add names to memory-infra dumpers for debugging

gpu/command_buffer/client/cmd_buffer_helper.cc

Index: gpu/command_buffer/client/cmd_buffer_helper.cc
diff --git a/gpu/command_buffer/client/cmd_buffer_helper.cc b/gpu/command_buffer/client/cmd_buffer_helper.cc
index 35805fe195703e37b006a0b7e2aef33439d0d333..01543b9d033b7ef80424e18e8858f72cc3f99a94 100644
--- a/gpu/command_buffer/client/cmd_buffer_helper.cc
+++ b/gpu/command_buffer/client/cmd_buffer_helper.cc
@@ -43,7 +43,7 @@ CommandBufferHelper::CommandBufferHelper(CommandBuffer* command_buffer)
   // TODO(ericrk): Get this working in Android Webview. crbug.com/517156
   if (base::ThreadTaskRunnerHandle::IsSet()) {
     base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
-        this, base::ThreadTaskRunnerHandle::Get());
+        this, "gpu::CommandBufferHelper", base::ThreadTaskRunnerHandle::Get());
   }
 }