Exposing the child process unique ID through the task manager.

chrome/browser/task_manager/task_manager.h

Index: chrome/browser/task_manager/task_manager.h
diff --git a/chrome/browser/task_manager/task_manager.h b/chrome/browser/task_manager/task_manager.h
index 2f993960b57f7262226f1ec9ec58259c51c0b059..cf4694d1c350a67312a8ad0afb43871bf4d262d2 100644
--- a/chrome/browser/task_manager/task_manager.h
+++ b/chrome/browser/task_manager/task_manager.h
@@ -68,6 +68,7 @@ class TaskManager {
     virtual string16 GetProfileName() const = 0;
     virtual SkBitmap GetIcon() const = 0;
     virtual base::ProcessHandle GetProcess() const = 0;
+    virtual int GetUniqueChildProcessId() const = 0;
     virtual Type GetType() const = 0;
     virtual int GetRoutingID() const { return 0; }
 
@@ -376,6 +377,9 @@ class TaskManagerModel : public base::RefCountedThreadSafe<TaskManagerModel> {
   // Returns process handle for given resource.
   base::ProcessHandle GetResourceProcessHandle(int index) const;
 
+  // Returns the unique child process ID.

[Charlie Reis, 2012/04/04 17:53:40]

This needs more of a description to distinguish it from the operating system's
process ID.  We should also mention it's not displayed to the user in the Task
Manager, but is useful for internal tracking and for extension APIs.

[nasko, 2012/04/04 18:13:19]

Done.

+  int GetUniqueChildProcessId(int index) const;
+
   // Returns the type of the given resource.
   TaskManager::Resource::Type GetResourceType(int index) const;