Move PageTransition from //content/public/common to //ui/base

Move PageTransition enumeration from //content/public/common to //ui/base
so that it can be used by iOS and layered components that are used on iOS.

BUG=372373
[email protected], [email protected], [email protected]
TBR=ben, nasko

Review URL: https://codereview.chromium.org/562603002

Cr-Commit-Position: refs/heads/master@{#295686}
diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
index dd998c6..134b8d8 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -31,13 +31,13 @@
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_contents.h"
-#include "content/public/common/page_transition_types.h"
 #include "content/public/common/renderer_preferences.h"
 #include "content/public/common/resource_type.h"
 #include "content/public/common/three_d_api_types.h"
 #include "net/base/load_states.h"
 #include "net/http/http_response_headers.h"
 #include "third_party/WebKit/public/web/WebDragOperation.h"
+#include "ui/base/page_transition_types.h"
 #include "ui/gfx/rect_f.h"
 #include "ui/gfx/size.h"
 
@@ -508,7 +508,7 @@
   virtual void DidCommitProvisionalLoad(
       RenderFrameHostImpl* render_frame_host,
       const GURL& url,
-      PageTransition transition_type) OVERRIDE;
+      ui::PageTransition transition_type) OVERRIDE;
   virtual void DidNavigateMainFramePreCommit(
       bool navigation_is_within_page) OVERRIDE;
   virtual void DidNavigateMainFramePostCommit(