Move ZoomObserver, ZoomController and ZoomEventManager to components/.

chrome/browser/ui/zoom/chrome_zoom_level_otr_delegate.cc

Index: chrome/browser/ui/zoom/chrome_zoom_level_otr_delegate.cc
diff --git a/chrome/browser/ui/zoom/chrome_zoom_level_otr_delegate.cc b/chrome/browser/ui/zoom/chrome_zoom_level_otr_delegate.cc
index 79af1b89f6fce012badba27cff0d0fa754aa7d76..287e2153ef030c0690802ac273146efbaa6834ce 100644
--- a/chrome/browser/ui/zoom/chrome_zoom_level_otr_delegate.cc
+++ b/chrome/browser/ui/zoom/chrome_zoom_level_otr_delegate.cc
@@ -5,14 +5,13 @@
 #include "chrome/browser/ui/zoom/chrome_zoom_level_otr_delegate.h"
 
 #include "base/bind.h"
-#include "chrome/browser/ui/zoom/zoom_event_manager.h"
+#include "components/ui/zoom/zoom_event_manager.h"
 
 namespace chrome {
 
 ChromeZoomLevelOTRDelegate::ChromeZoomLevelOTRDelegate(
-      base::WeakPtr<ZoomEventManager> zoom_event_manager)
-  : zoom_event_manager_(zoom_event_manager),
-    host_zoom_map_(nullptr) {
+    base::WeakPtr<components::ZoomEventManager> zoom_event_manager)
+    : zoom_event_manager_(zoom_event_manager), host_zoom_map_(nullptr) {
 }
 
 ChromeZoomLevelOTRDelegate::~ChromeZoomLevelOTRDelegate() {