Convert StartPageService and ZoomController to use the new navigation callbacks.

components/zoom/zoom_controller.cc

Index: components/zoom/zoom_controller.cc
diff --git a/components/zoom/zoom_controller.cc b/components/zoom/zoom_controller.cc
index a28a01dcef71663f17c63d79aeb66ae9d0ecd8bc..f0c56f18d9e09c1daed7270d368a78af0b1d49fc 100644
--- a/components/zoom/zoom_controller.cc
+++ b/components/zoom/zoom_controller.cc
@@ -9,6 +9,7 @@
 #include "content/public/browser/host_zoom_map.h"
 #include "content/public/browser/navigation_details.h"
 #include "content/public/browser/navigation_entry.h"
+#include "content/public/browser/navigation_handle.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
@@ -284,14 +285,16 @@ void ZoomController::ResetZoomModeOnNavigationIfNeeded(const GURL& url) {
   zoom_mode_ = ZOOM_MODE_DEFAULT;
 }
 
-void ZoomController::DidNavigateMainFrame(
-    const content::LoadCommittedDetails& details,
-    const content::FrameNavigateParams& params) {
-  if (details.entry && details.entry->GetPageType() == content::PAGE_TYPE_ERROR)
+void ZoomController::DidFinishNavigation(
+    content::NavigationHandle* navigation_handle) {
+  if (!navigation_handle->IsInMainFrame() || !navigation_handle->HasCommitted())
+    return;
+
+  if (navigation_handle->IsErrorPage())
     content::HostZoomMap::SendErrorPageZoomLevelRefresh(web_contents());
 
-  if (!details.is_in_page)
-    ResetZoomModeOnNavigationIfNeeded(params.url);
+  if (!navigation_handle->IsSamePage())
+    ResetZoomModeOnNavigationIfNeeded(navigation_handle->GetURL());
 
   // If the main frame's content has changed, the new page may have a different
   // zoom level from the old one.