Exposing the child process unique ID through the task manager.

chrome/browser/ui/cocoa/task_manager_mac_unittest.mm

Index: chrome/browser/ui/cocoa/task_manager_mac_unittest.mm
diff --git a/chrome/browser/ui/cocoa/task_manager_mac_unittest.mm b/chrome/browser/ui/cocoa/task_manager_mac_unittest.mm
index 1c958b3420e4e0a587ea9d238cb968dc29a19003..7eb22aac06fd8710e668af74dc369c914697b3ff 100644
--- a/chrome/browser/ui/cocoa/task_manager_mac_unittest.mm
+++ b/chrome/browser/ui/cocoa/task_manager_mac_unittest.mm
@@ -24,6 +24,11 @@ class TestResource : public TaskManager::Resource {
   virtual string16 GetProfileName() const OVERRIDE { return string16(); }
   virtual SkBitmap GetIcon() const OVERRIDE { return SkBitmap(); }
   virtual base::ProcessHandle GetProcess() const OVERRIDE { return pid_; }
+  virtual int GetUniqueChildProcessId() const OVERRIDE {
+    // In reality the unique child process ID is not the actual process ID,
+    // but for testing purposes it shouldn't make difference.
+    return static_cast<int>(base::GetCurrentProcId());
+  }
   virtual Type GetType() const OVERRIDE { return RENDERER; }
   virtual bool SupportNetworkUsage() const OVERRIDE { return false; }
   virtual void SetSupportNetworkUsage() OVERRIDE { NOTREACHED(); }