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

chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm

Index: chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm
===================================================================
--- chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm	(revision 105162)
+++ chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm	(working copy)
@@ -92,7 +92,9 @@
       profile_(profile),
       browser_(browser),
       toolbar_model_(toolbar_model),
-      transition_(PageTransition::TYPED | PageTransition::FROM_ADDRESS_BAR),
+      transition_(content::PageTransitionFromInt(
+          content::PAGE_TRANSITION_TYPED |
+          content::PAGE_TRANSITION_FROM_ADDRESS_BAR)),
       weak_ptr_factory_(this) {
   for (size_t i = 0; i < CONTENT_SETTINGS_NUM_TYPES; ++i) {
     DCHECK_EQ(i, content_setting_decorations_.size());
@@ -152,7 +154,7 @@
   return disposition_;
 }
 
-PageTransition::Type LocationBarViewMac::GetPageTransition() const {
+content::PageTransition LocationBarViewMac::GetPageTransition() const {
   return transition_;
 }
 
@@ -218,16 +220,18 @@
   OnChanged();
 }
 
-void LocationBarViewMac::OnAutocompleteAccept(const GURL& url,
-                                              WindowOpenDisposition disposition,
-                                              PageTransition::Type transition,
-                                              const GURL& alternate_nav_url) {
+void LocationBarViewMac::OnAutocompleteAccept(
+    const GURL& url,
+    WindowOpenDisposition disposition,
+    content::PageTransition transition,
+    const GURL& alternate_nav_url) {
   // WARNING: don't add an early return here. The calls after the if must
   // happen.
   if (url.is_valid()) {
     location_input_ = UTF8ToUTF16(url.spec());
     disposition_ = disposition;
-    transition_ = transition | PageTransition::FROM_ADDRESS_BAR;
+    transition_ = content::PageTransitionFromInt(
+        transition | content::PAGE_TRANSITION_FROM_ADDRESS_BAR);
 
     if (command_updater_) {
       if (!alternate_nav_url.is_valid()) {