[iOS Clean] Added HTTP authentication dialog support.

ios/clean/chrome/browser/ui/web_contents/web_coordinator.mm

Index: ios/clean/chrome/browser/ui/web_contents/web_coordinator.mm
diff --git a/ios/clean/chrome/browser/ui/web_contents/web_coordinator.mm b/ios/clean/chrome/browser/ui/web_contents/web_coordinator.mm
index 9b8f4ed7780d27f6d3cc03c39a693d3639a13bba..70aaafda0634965d9ff1e645f519ce270030e4fa 100644
--- a/ios/clean/chrome/browser/ui/web_contents/web_coordinator.mm
+++ b/ios/clean/chrome/browser/ui/web_contents/web_coordinator.mm
@@ -9,6 +9,8 @@
 #import "ios/clean/chrome/browser/ui/commands/context_menu_commands.h"
 #import "ios/clean/chrome/browser/ui/context_menu/context_menu_context_impl.h"
 #import "ios/clean/chrome/browser/ui/context_menu/web_context_menu_coordinator.h"
+#import "ios/clean/chrome/browser/ui/dialogs/http_auth_dialogs/http_auth_dialog_coordinator.h"
+#import "ios/clean/chrome/browser/ui/dialogs/http_auth_dialogs/http_auth_dialog_request.h"
 #import "ios/clean/chrome/browser/ui/overlay_service/browser_coordinator+overlay_support.h"
 #import "ios/clean/chrome/browser/ui/overlay_service/overlay_service.h"
 #import "ios/clean/chrome/browser/ui/web_contents/web_contents_mediator.h"
@@ -123,4 +125,19 @@ - (BOOL)webState:(web::WebState*)webState
   return YES;
 }
 
+- (void)webState:(web::WebState*)webState
+    didRequestHTTPAuthForProtectionSpace:(NSURLProtectionSpace*)protectionSpace
+                      proposedCredential:(NSURLCredential*)proposedCredential
+                       completionHandler:(void (^)(NSString* username,
+                                                   NSString* password))handler {
+  HTTPAuthDialogRequest* request =
+      [HTTPAuthDialogRequest stateWithWebState:webState
+                               protectionSpace:protectionSpace
+                                    credential:proposedCredential
+                                      callback:handler];
+  HTTPAuthDialogCoordinator* dialogCoordinator =
+      [[HTTPAuthDialogCoordinator alloc] initWithRequest:request];
+  self.overlayService->ShowOverlayForWebState(dialogCoordinator, webState);
+}
+
 @end