Move ZoomObserver, ZoomController and ZoomEventManager to components/.

chrome/browser/ui/cocoa/wrench_menu/wrench_menu_controller.mm

Index: chrome/browser/ui/cocoa/wrench_menu/wrench_menu_controller.mm
diff --git a/chrome/browser/ui/cocoa/wrench_menu/wrench_menu_controller.mm b/chrome/browser/ui/cocoa/wrench_menu/wrench_menu_controller.mm
index dd4cea86131c3379c86783fdb7f958c2d9b9f584..19eff4a1e019a2222d99a2200616ca4af92291b5 100644
--- a/chrome/browser/ui/cocoa/wrench_menu/wrench_menu_controller.mm
+++ b/chrome/browser/ui/cocoa/wrench_menu/wrench_menu_controller.mm
@@ -24,8 +24,8 @@
 #import "chrome/browser/ui/cocoa/wrench_menu/recent_tabs_menu_model_delegate.h"
 #include "chrome/browser/ui/toolbar/recent_tabs_sub_menu_model.h"
 #include "chrome/browser/ui/toolbar/wrench_menu_model.h"
-#include "chrome/browser/ui/zoom/zoom_event_manager.h"
 #include "chrome/grit/generated_resources.h"
+#include "components/ui/zoom/zoom_event_manager.h"
 #include "content/public/browser/user_metrics.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/models/menu_model.h"
@@ -68,7 +68,7 @@ class AcceleratorDelegate : public ui::AcceleratorProvider {
 class ZoomLevelObserver {
  public:
   ZoomLevelObserver(WrenchMenuController* controller,
-                    ZoomEventManager* manager)
+                    ui_zoom::ZoomEventManager* manager)
       : controller_(controller) {
     subscription_ = manager->AddZoomLevelChangedCallback(
         base::Bind(&ZoomLevelObserver::OnZoomLevelChanged,
@@ -102,7 +102,7 @@ class ZoomLevelObserver {
     browser_ = browser;
     observer_.reset(new WrenchMenuControllerInternal::ZoomLevelObserver(
         self,
-        ZoomEventManager::GetForBrowserContext(browser->profile())));
+        ui_zoom::ZoomEventManager::GetForBrowserContext(browser->profile())));
     acceleratorDelegate_.reset(
         new WrenchMenuControllerInternal::AcceleratorDelegate());
     [self createModel];