Report utility process JS memory in task manager.

content/public/browser/browser_child_process_host.h

Index: content/public/browser/browser_child_process_host.h
diff --git a/content/public/browser/browser_child_process_host.h b/content/public/browser/browser_child_process_host.h
index d1369a455b01efce5497db8565aad2069ef2bef1..1cf5745c79a0043d48d21196ff8d77cfa29b7a9f 100644
--- a/content/public/browser/browser_child_process_host.h
+++ b/content/public/browser/browser_child_process_host.h
@@ -25,6 +25,7 @@ namespace content {
 class BrowserChildProcessHostDelegate;
 class ChildProcessHost;
 class SandboxedProcessLauncherDelegate;
+class ServiceRegistry;
 struct ChildProcessData;
 
 // This represents child processes of the browser process, i.e. plugins. They
@@ -38,6 +39,11 @@ class CONTENT_EXPORT BrowserChildProcessHost : public IPC::Sender {
       content::ProcessType process_type,
       BrowserChildProcessHostDelegate* delegate);
 
+  // Returns the child process host with unique id |child_process_id|, or
+  // nullptr if it doesn't exist. |child_process_id| is NOT the process ID, but
+  // is the same unique ID as |ChildProcessData::id|.
+  static BrowserChildProcessHost* FromID(int child_process_id);
+
   ~BrowserChildProcessHost() override {}
 
   // Derived classes call this to launch the child process asynchronously.
@@ -72,6 +78,10 @@ class CONTENT_EXPORT BrowserChildProcessHost : public IPC::Sender {
   // this object.
   virtual void SetHandle(base::ProcessHandle handle) = 0;
 
+  // Get the Mojo service registry connected to the child process. Returns
+  // nullptr if no service registry exists.
+  virtual ServiceRegistry* GetServiceRegistry() = 0;
+
 #if defined(OS_MACOSX) && !defined(OS_IOS)
   // Returns a PortProvider used to get process metrics for child processes.
   static base::ProcessMetrics::PortProvider* GetPortProvider();