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/components/navigation_interception/intercept_navigation_delegate.cc b/components/navigation_interception/intercept_navigation_delegate.cc
index bf6dbabc..e26a943 100644
--- a/components/navigation_interception/intercept_navigation_delegate.cc
+++ b/components/navigation_interception/intercept_navigation_delegate.cc
@@ -19,7 +19,7 @@
 using base::android::ConvertUTF8ToJavaString;
 using base::android::ScopedJavaLocalRef;
 using content::BrowserThread;
-using content::PageTransition;
+using ui::PageTransition;
 using content::RenderViewHost;
 using content::WebContents;