Move ZoomObserver, ZoomController and ZoomEventManager to components/.

chrome/browser/ui/autofill/chrome_autofill_client.h

Index: chrome/browser/ui/autofill/chrome_autofill_client.h
diff --git a/chrome/browser/ui/autofill/chrome_autofill_client.h b/chrome/browser/ui/autofill/chrome_autofill_client.h
index 09d346a81f7be91f90a6f5c6e2d2ba8f71b7d553..c1f153cb785deaf4bba2735a309b79c66d3077f4 100644
--- a/chrome/browser/ui/autofill/chrome_autofill_client.h
+++ b/chrome/browser/ui/autofill/chrome_autofill_client.h
@@ -9,10 +9,10 @@
 #include "base/compiler_specific.h"
 #include "base/i18n/rtl.h"
 #include "base/memory/weak_ptr.h"
-#include "chrome/browser/ui/zoom/zoom_observer.h"
 #include "components/autofill/core/browser/autofill_client.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
+#include "extensions/browser/ui/zoom/zoom_observer.h"
 
 namespace content {
 struct FrameNavigateParams;
@@ -33,7 +33,7 @@ class ChromeAutofillClient
     : public AutofillClient,
       public content::WebContentsUserData<ChromeAutofillClient>,
       public content::WebContentsObserver,
-      public ZoomObserver {
+      public extensions::ZoomObserver {
  public:
   ~ChromeAutofillClient() override;
 
@@ -75,7 +75,8 @@ class ChromeAutofillClient
   void WebContentsDestroyed() override;
 
   // ZoomObserver implementation.
-  void OnZoomChanged(const ZoomController::ZoomChangedEventData& data) override;
+  void OnZoomChanged(
+      const extensions::ZoomController::ZoomChangedEventData& data) override;
 
   // Exposed for testing.
   AutofillDialogController* GetDialogControllerForTesting() {