Cleanup: change PIDs to base::ProcessId (or pid_t, as appropriate).

We probably want to discourage the use of ints for PIDs. This is a start; there are many other places where we should fix this.

BUG=25272
TEST=none

Review URL: http://codereview.chromium.org/300010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@29511 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/renderer/render_thread.cc b/chrome/renderer/render_thread.cc
index 0ab02c8b..3ccdd858 100644
--- a/chrome/renderer/render_thread.cc
+++ b/chrome/renderer/render_thread.cc
@@ -380,7 +380,7 @@
 void RenderThread::OnGetRendererTcmalloc() {
   std::string result;
   char buffer[1024 * 32];
-  int pid = base::GetCurrentProcId();
+  base::ProcessId pid = base::GetCurrentProcId();
   MallocExtension::instance()->GetStats(buffer, sizeof(buffer));
   result.append(buffer);
   Send(new ViewHostMsg_RendererTcmalloc(pid, result));