Switch to standard integer types in extensions/browser/.

extensions/browser/app_window/app_window_contents.cc

Index: extensions/browser/app_window/app_window_contents.cc
diff --git a/extensions/browser/app_window/app_window_contents.cc b/extensions/browser/app_window/app_window_contents.cc
index 03629988e967409ab66c987eee21555072a5ffbb..3419326f867c67d06df0d51c5bf462f8de4a8f41 100644
--- a/extensions/browser/app_window/app_window_contents.cc
+++ b/extensions/browser/app_window/app_window_contents.cc
@@ -40,7 +40,7 @@ void AppWindowContentsImpl::Initialize(content::BrowserContext* context,
   web_contents_->GetRenderViewHost()->SyncRendererPrefs();
 }
 
-void AppWindowContentsImpl::LoadContents(int32 creator_process_id) {
+void AppWindowContentsImpl::LoadContents(int32_t creator_process_id) {
   // If the new view is in the same process as the creator, block the created
   // RVH from loading anything until the background page has had a chance to
   // do any initialization it wants. If it's a different process, the new RVH