Removes Native App Launcher functionality.

ios/chrome/browser/tabs/tab.mm

Index: ios/chrome/browser/tabs/tab.mm
diff --git a/ios/chrome/browser/tabs/tab.mm b/ios/chrome/browser/tabs/tab.mm
index 3b94a7e5f17d072ce6a37b4b3b194c18548b963c..f43eb9bcecc753d7a109a353a0f6991c302a2afd 100644
--- a/ios/chrome/browser/tabs/tab.mm
+++ b/ios/chrome/browser/tabs/tab.mm
@@ -277,10 +277,6 @@ bool IsApplicationStateNotActive(UIApplicationState state) {
   // Handles autofill.
   base::scoped_nsobject<AutofillController> autofillController_;
 
-  // Handles GAL infobar on web pages.
-  base::scoped_nsobject<NativeAppNavigationController>

[Eugene But (OOO till 7-30), 2017/04/14 14:30:51]

Are there any includes which now can be removed
(native_app_navigation_controller.h, native_app_metadata.h,
authentication_service.h, authentication_service_factory.h, chrome_identity.h)?

[pkl (ping after 24h if needed), 2017/04/14 16:59:23]

Yes. Done.

-      nativeAppNavigationController_;
-
   // Handles caching and retrieving of snapshots.
   base::scoped_nsobject<SnapshotManager> snapshotManager_;
 
@@ -345,9 +341,6 @@ bool IsApplicationStateNotActive(UIApplicationState state) {
 // Returns the OpenInController for this tab.
 - (OpenInController*)openInController;
 
-// Initialize the Native App Launcher controller.
-- (void)initNativeAppNavigationController;
-
 // Handles exportable files if possible.
 - (void)handleExportableFile:(net::HttpResponseHeaders*)headers;
 
@@ -500,8 +493,6 @@ void TabInfoBarObserver::OnInfoBarReplaced(infobars::InfoBar* old_infobar,
         initWithSnapshotManager:snapshotManager_
                             tab:self]);
 
-    [self initNativeAppNavigationController];
-
     [[NSNotificationCenter defaultCenter]
         addObserver:self
            selector:@selector(applicationDidBecomeActive)
@@ -1608,29 +1599,8 @@ void TabInfoBarObserver::OnInfoBarReplaced(infobars::InfoBar* old_infobar,
 - (BOOL)urlTriggersNativeAppLaunch:(const GURL&)url
                          sourceURL:(const GURL&)sourceURL
                        linkClicked:(BOOL)linkClicked {
-  // Don't open any native app directly when prerendering or from Incognito.
-  if (isPrerenderTab_ || self.browserState->IsOffTheRecord())
-    return NO;
-
-  base::scoped_nsprotocol<id<NativeAppMetadata>> metadata(
-      [[ios::GetChromeBrowserProvider()->GetNativeAppWhitelistManager()
-          nativeAppForURL:url] retain]);
-  if (![metadata shouldAutoOpenLinks])
-    return NO;
-
-  AuthenticationService* authenticationService =
-      AuthenticationServiceFactory::GetForBrowserState(self.browserState);
-  ChromeIdentity* identity = authenticationService->GetAuthenticatedIdentity();
-
-  // Attempts to open external app without x-callback.
-  if ([self openExternalURL:[metadata launchURLWithURL:url identity:identity]
-                  sourceURL:sourceURL
-                linkClicked:linkClicked]) {
-    return YES;
-  }
-
-  // Auto-open didn't work. Reset the auto-open flag.
-  [metadata unsetShouldAutoOpenLinks];
+  // TODO(crbug/711511): Returning NO bypasses all Link Navigation logic
+  // for Native App Launcher. This call should eventually be eliminated.
   return NO;
 }
 
@@ -1914,16 +1884,8 @@ void TabInfoBarObserver::OnInfoBarReplaced(infobars::InfoBar* old_infobar,
 }
 
 - (NativeAppNavigationController*)nativeAppNavigationController {
-  return nativeAppNavigationController_;
-}
-
-- (void)initNativeAppNavigationController {
-  if (browserState_->IsOffTheRecord())
-    return;
-  DCHECK(!nativeAppNavigationController_);
-  nativeAppNavigationController_.reset(
-      [[NativeAppNavigationController alloc] initWithWebState:self.webState]);
-  DCHECK(nativeAppNavigationController_);
+  // TODO(crbug.com/711511): This call should eventually be eliminated.
+  return nil;
 }
 
 - (id<PassKitDialogProvider>)passKitDialogProvider {