Move PageTransition into content namespace. While I'm touching all these files, I've also updated...

chrome/browser/ui/intents/web_intent_picker_controller.cc

Index: chrome/browser/ui/intents/web_intent_picker_controller.cc
===================================================================
--- chrome/browser/ui/intents/web_intent_picker_controller.cc	(revision 105162)
+++ chrome/browser/ui/intents/web_intent_picker_controller.cc	(working copy)
@@ -189,7 +189,7 @@
   // the lifetime of the service url context, and that may mean we need to pass
   // more information into the injector to find the picker again and close it.
   browser::NavigateParams params(NULL, urls_[index],
-                                 PageTransition::AUTO_BOOKMARK);
+                                 content::PAGE_TRANSITION_AUTO_BOOKMARK);
   params.disposition = NEW_FOREGROUND_TAB;
   params.profile = wrapper_->profile();
   browser::Navigate(&params);