Don't pass ProcessHandle through ChildProcessHostDelegate.

content/public/common/child_process_host_delegate.h

Index: content/public/common/child_process_host_delegate.h
diff --git a/content/public/common/child_process_host_delegate.h b/content/public/common/child_process_host_delegate.h
index 9aa23ae8823a5aaef7663ffbe95c7a4085d32a64..95942763c1575dce8df48cfedce8ef2445b4efdb 100644
--- a/content/public/common/child_process_host_delegate.h
+++ b/content/public/common/child_process_host_delegate.h
@@ -28,9 +28,9 @@ class ChildProcessHostDelegate : public IPC::Listener {
   // would normally delete the object in this case.
   virtual void OnChildDisconnected() {}
 
-  // Returns the handle of the child process. This can be called only after
+  // Returns a reference to the child process. This can be called only after
   // OnProcessLaunched is called or it will be invalid and may crash.
-  virtual base::ProcessHandle GetHandle() const = 0;
+  virtual const base::Process& GetProcess() const = 0;
 };
 
 };  // namespace content