[iOS Clean] Added HTTP authentication dialog support.

ios/clean/chrome/browser/ui/dialogs/http_auth_dialogs/http_auth_dialog_coordinator.mm

Index: ios/clean/chrome/browser/ui/dialogs/http_auth_dialogs/http_auth_dialog_coordinator.mm
diff --git a/ios/clean/chrome/browser/ui/dialogs/http_auth_dialogs/http_auth_dialog_coordinator.mm b/ios/clean/chrome/browser/ui/dialogs/http_auth_dialogs/http_auth_dialog_coordinator.mm
new file mode 100644
index 0000000000000000000000000000000000000000..8f362df46b0a49a2d8e26ae3566116d9a92e51c4
--- /dev/null
+++ b/ios/clean/chrome/browser/ui/dialogs/http_auth_dialogs/http_auth_dialog_coordinator.mm
@@ -0,0 +1,90 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "ios/clean/chrome/browser/ui/dialogs/http_auth_dialogs/http_auth_dialog_coordinator.h"
+
+#import "ios/clean/chrome/browser/ui/commands/http_auth_dialog_commands.h"
+#import "ios/clean/chrome/browser/ui/commands/overlay_commands.h"
+#import "ios/clean/chrome/browser/ui/dialogs/dialog_view_controller.h"
+#import "ios/clean/chrome/browser/ui/dialogs/http_auth_dialogs/http_auth_dialog_mediator.h"
+#import "ios/clean/chrome/browser/ui/dialogs/http_auth_dialogs/http_auth_dialog_state.h"
+#import "ios/clean/chrome/browser/ui/overlays/overlay_queue.h"
+#import "ios/shared/chrome/browser/ui/browser_list/browser.h"
+#import "ios/shared/chrome/browser/ui/commands/command_dispatcher.h"
+#import "ios/shared/chrome/browser/ui/coordinators/browser_coordinator+internal.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+@interface HTTPAuthDialogCoordinator ()<HTTPAuthDialogDismissalCommands>
+
+// The dispatcher for HTTPAuthDialogDismissalCommands.
+@property(nonatomic, readonly) id<DialogDismissalCommands> dismissalDispatcher;
+// The state used to configure this dialog.
+@property(nonatomic, strong) HTTPAuthDialogState* state;
+// The view controller used to display this dialog.
+@property(nonatomic, strong) DialogViewController* viewController;
+// The mediator used to set up |viewController|.
+@property(nonatomic, strong) HTTPAuthDialogMediator* mediator;
+
+@end
+
+@implementation HTTPAuthDialogCoordinator
+
+@synthesize state = _state;
+@synthesize viewController = _viewController;
+@synthesize mediator = _mediator;
+
+- (instancetype)initWithState:(HTTPAuthDialogState*)state {
+  DCHECK(state.webState);
+  if ((self = [super initWithWebState:state.webState])) {
+    _state = state;
+  }
+  return self;
+}
+
+#pragma mark - Accessors
+
+- (id<DialogDismissalCommands>)dismissalDispatcher {
+  return static_cast<id<DialogDismissalCommands>>(self.browser->dispatcher());
+}
+
+#pragma mark - BrowserCoordinator
+
+- (void)start {
+  self.viewController =
+      [[DialogViewController alloc] initWithStyle:UIAlertControllerStyleAlert
+                                       dispatcher:self.dismissalDispatcher];
+  self.mediator = [[HTTPAuthDialogMediator alloc]
+      initWithDispatcher:self.browser->dispatcher()
+                   state:self.state];
+  [self.mediator updateConsumer:self.viewController];
+  [self.mediator dialogWillStart];
+  [self.browser->dispatcher()
+      startDispatchingToTarget:self
+                   forProtocol:@protocol(HTTPAuthDialogDismissalCommands)];
+  [super start];
+}
+
+- (void)stop {
+  [self.mediator dialogWillStop];
+  [super stop];
+}
+
+#pragma mark - OverlayCoordinator
+
+- (void)cancelOverlay {
+  [self.state runCallbackWithUserName:nil password:nil];
+}
+
+#pragma mark - HTTPAuthDialogDismissalCommands
+
+- (void)dismissHTTPAuthDialogWithUsername:(NSString*)username
+                                 password:(NSString*)password {
+  [self.state runCallbackWithUserName:username password:password];

[marq (ping after 24h), 2017/06/14 11:19:15]

I'd rather have the mediator handle stuff like running callbacks the web layer
exposes.

[kkhorimoto, 2017/06/23 06:25:41]

Done.  We'll still need to run the callback here for |-cancelOverlay|, but that
greatly HTTPAuthDialogDismissalCommands, since we don't need to send the
parameters anymore.  It'll help even more for JavaScript dialogs.

+  [self stop];
+}
+
+@end