Remove RenderViewObserver::ZoomLevelChanged.

This pathway is obsolete, and is removed in this CL.

BUG=392851

Review URL: https://codereview.chromium.org/388583002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@282738 0039d316-1c4b-4281-b951-d872f2087c98

components/autofill/content/renderer/autofill_agent.cc

@@ -217,13 +217,6 @@ void AutofillAgent::WillSubmitForm(WebLocalFrame* frame,
   }
 }
 
-void AutofillAgent::ZoomLevelChanged() {
-  // Any time the zoom level changes, the page's content moves, so any Autofill
-  // popups should be hidden. This is only needed for the new Autofill UI
-  // because WebKit already knows to hide the old UI when this occurs.
-  HidePopup();
-}
-
 void AutofillAgent::FocusedNodeChanged(const WebNode& node) {
   if (password_generation_agent_ &&
       password_generation_agent_->FocusedNodeHasChanged(node)) {

components/autofill/content/renderer/autofill_agent.h

@@ -65,7 +65,6 @@ class AutofillAgent : public content::RenderViewObserver,
   virtual void FrameWillClose(blink::WebFrame* frame) OVERRIDE;
   virtual void WillSubmitForm(blink::WebLocalFrame* frame,
                               const blink::WebFormElement& form) OVERRIDE;
-  virtual void ZoomLevelChanged() OVERRIDE;
   virtual void DidChangeScrollOffset(blink::WebLocalFrame* frame) OVERRIDE;
   virtual void FocusedNodeChanged(const blink::WebNode& node) OVERRIDE;
   virtual void OrientationChangeEvent() OVERRIDE;

content/public/renderer/render_view_observer.h

@@ -79,7 +79,6 @@ class CONTENT_EXPORT RenderViewObserver : public IPC::Listener,
                                    blink::WebDataSource* ds) {}
   virtual void PrintPage(blink::WebLocalFrame* frame, bool user_initiated) {}
   virtual void FocusedNodeChanged(const blink::WebNode& node) {}
-  virtual void ZoomLevelChanged() {};
   virtual void DidChangeScrollOffset(blink::WebLocalFrame* frame) {}
   virtual void DraggableRegionsChanged(blink::WebFrame* frame) {}
   virtual void DidCommitCompositorFrame() {}

content/renderer/render_view_impl.cc

@@ -3939,8 +3939,6 @@ void RenderViewImpl::zoomLimitsChanged(double minimum_level,
 void RenderViewImpl::zoomLevelChanged() {
   double zoom_level = webview()->zoomLevel();
 
-  FOR_EACH_OBSERVER(RenderViewObserver, observers_, ZoomLevelChanged());
-
   // Do not send empty URLs to the browser when we are just setting the default
   // zoom level (from RendererPreferences) before the first navigation.
   if (!webview()->mainFrame()->document().url().isEmpty()) {