Show gpu process stats in about:tcmalloc

chrome/browser/browser_about_handler.cc

Index: chrome/browser/browser_about_handler.cc
diff --git a/chrome/browser/browser_about_handler.cc b/chrome/browser/browser_about_handler.cc
index 6a4a10f07b2a9e7a5c49a1b3cb6f27827d0a0b67..0d2b8bd1f217b74335e83659a3d04f69326ab9fa 100644
--- a/chrome/browser/browser_about_handler.cc
+++ b/chrome/browser/browser_about_handler.cc
@@ -202,9 +202,11 @@ AboutTcmallocOutputs::AboutTcmallocOutputs() {}
 
 AboutTcmallocOutputs::~AboutTcmallocOutputs() {}
 
-// Glue between the callback task and the method in the singleton.
-void AboutTcmallocRendererCallback(base::ProcessId pid,
-                                   const std::string& output) {
-  AboutTcmallocOutputs::GetInstance()->RendererCallback(pid, output);
+void AboutTcmallocOutputs::OnStatsForChildProcess(
+    base::ProcessId pid, content::ProcessType process_type,
+    const std::string& output) {
+  std::string header = content::GetProcessTypeNameInEnglish(process_type);
+  base::StringAppendF(&header, " PID %d", static_cast<int>(pid));
+  SetOutput(header, output);
 }
 #endif