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..9b5899a029127690f4516f7055e212a642dc87e3 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 +39,10 @@ class CONTENT_EXPORT BrowserChildProcessHost : public IPC::Sender {
       content::ProcessType process_type,
       BrowserChildProcessHostDelegate* delegate);
 
+  // Returns the child process host with unique id |id|, or nullptr if it
+  // doesn't exist.
+  static BrowserChildProcessHost* Get(int id);

[ncarter (slow), 2015/05/07 20:12:44]

Name this FromID to match the convention established by these existing classes:

https://code.google.com/p/chromium/codesearch#search/&q=static.*FromID%5C(.*i...

Also I suggest naming the argument process_id or child_process_id -- our
convention here is less rigid, seems that there's just one namespace
encompassing the various child process ids and render process ids, but they are
called different things in different places. I think some of the variation in
naming in places is due to worries about pid/process_id confusion since so there
are so many int ids that could be meant.

[Anand Mistry (off Chromium), 2015/05/11 05:41:31]

Done. Also clarified the comment to indicate what this ID is.

+
   ~BrowserChildProcessHost() override {}
 
   // Derived classes call this to launch the child process asynchronously.
@@ -72,6 +77,10 @@ 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();