Use portable typedef for PIDs (process IDs).

chrome/common/chrome_process_filter.cc

Index: chrome/common/chrome_process_filter.cc
diff --git a/chrome/common/chrome_process_filter.cc b/chrome/common/chrome_process_filter.cc
index 7632e44fc8da7e6f99c1dafbd163783fe1e9045b..2b12d2d00f07dcf8f3199d738b838a6ec3b7d0d6 100644
--- a/chrome/common/chrome_process_filter.cc
+++ b/chrome/common/chrome_process_filter.cc
@@ -28,8 +28,8 @@ BrowserProcessFilter::BrowserProcessFilter(const std::wstring user_data_dir)
     GetWindowThreadProcessId(message_window, &browser_process_id_);
 }
 
-bool BrowserProcessFilter::Includes(uint32 pid,
-                                    uint32 parent_pid) const {
+bool BrowserProcessFilter::Includes(base::ProcessId pid,
+                                    base::ProcessId parent_pid) const {
   return browser_process_id_ && (browser_process_id_ == pid ||
                                  browser_process_id_ == parent_pid);
 }