Move ZoomObserver, ZoomController and ZoomEventManager to components/.

chrome/browser/ui/views/toolbar/wrench_menu.cc

Index: chrome/browser/ui/views/toolbar/wrench_menu.cc
diff --git a/chrome/browser/ui/views/toolbar/wrench_menu.cc b/chrome/browser/ui/views/toolbar/wrench_menu.cc
index 2b6f6aea2727c035d4993fb621139189183a37c1..eac7619b7188bc29e5239e715320e223215a577e 100644
--- a/chrome/browser/ui/views/toolbar/wrench_menu.cc
+++ b/chrome/browser/ui/views/toolbar/wrench_menu.cc
@@ -24,10 +24,10 @@
 #include "chrome/browser/ui/views/bookmarks/bookmark_menu_delegate.h"
 #include "chrome/browser/ui/views/toolbar/extension_toolbar_menu_view.h"
 #include "chrome/browser/ui/views/toolbar/wrench_menu_observer.h"
-#include "chrome/browser/ui/zoom/zoom_controller.h"
-#include "chrome/browser/ui/zoom/zoom_event_manager.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/bookmarks/browser/bookmark_model.h"
+#include "components/ui/zoom/zoom_controller.h"
+#include "components/ui/zoom/zoom_event_manager.h"
 #include "content/public/browser/host_zoom_map.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
@@ -494,10 +494,12 @@ class WrenchMenu::ZoomView : public WrenchMenuView {
         decrement_button_(NULL),
         fullscreen_button_(NULL),
         zoom_label_width_(0) {
-    browser_zoom_subscription_ = ZoomEventManager::GetForBrowserContext(
-        menu->browser_->profile())->AddZoomLevelChangedCallback(
-            base::Bind(&WrenchMenu::ZoomView::OnZoomLevelChanged,
-                       base::Unretained(this)));
+    browser_zoom_subscription_ =
+        ui_zoom::ZoomEventManager::GetForBrowserContext(
+            menu->browser_->profile())
+            ->AddZoomLevelChangedCallback(
+                base::Bind(&WrenchMenu::ZoomView::OnZoomLevelChanged,
+                           base::Unretained(this)));
 
     decrement_button_ = CreateButtonWithAccName(
         IDS_ZOOM_MINUS2, InMenuButtonBackground::LEFT_BUTTON,
@@ -638,7 +640,8 @@ class WrenchMenu::ZoomView : public WrenchMenuView {
         menu()->browser_->tab_strip_model()->GetActiveWebContents();
     int zoom = 100;
     if (selected_tab)
-      zoom = ZoomController::FromWebContents(selected_tab)->GetZoomPercent();
+      zoom = ui_zoom::ZoomController::FromWebContents(selected_tab)
+                 ->GetZoomPercent();
     increment_button_->SetEnabled(zoom < selected_tab->GetMaximumZoomPercent());
     decrement_button_->SetEnabled(zoom > selected_tab->GetMinimumZoomPercent());
     zoom_label_->SetText(