[iOS] Creates a provider for Manualfill

Creates the provider that will contain the buttons to bring up manual
fallbacks for autofill. Gated behind the manual fill flag.

Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: Ia36af25fc1e45f92e892b72a058b92d00c135b9c
Bug: 845472
Reviewed-on: https://chromium-review.googlesource.com/1135323
Commit-Queue: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Reviewed-by: Stepan Khapugin <stkhapugin@chromium.org>
Reviewed-by: Moe Ahmadi <mahmadi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#575677}

ios/chrome/browser/autofill/manualfill/BUILD.gn

@@ -6,33 +6,14 @@ import("//ios/web/js_compile.gni")
 
 source_set("manualfill") {
   sources = [
-    "input_assistant_manualfill_view_controller.h",
-    "input_assistant_manualfill_view_controller.mm",
-    "manualfill_keyboard_view_controller.h",
-    "manualfill_keyboard_view_controller.mm",
-    "manualfill_view_controller.h",
-    "manualfill_view_controller.mm",
-    "password_picker_view_controller.h",
-    "password_picker_view_controller.mm",
+    "accessory_provider.h",
+    "accessory_provider.mm",
   ]
   deps = [
-    ":injected_js",
     "//base",
-    "//ios/chrome/browser/ui",
+    "//ios/chrome/browser/autofill",
     "//ios/chrome/browser/ui/autofill/manualfill",
-    "//ios/web/public:public",
   ]
   libs = [ "UIKit.framework" ]
   configs += [ "//build/config/compiler:enable_arc" ]
 }
-
-js_compile_checked("injected_js") {
-  visibility = [ ":manualfill" ]
-  sources = [
-    "resources/manualfill_controller.js",
-  ]
-  js_modules = [
-    "//components/autofill/ios/fill/resources/form.js",
-    "//components/autofill/ios/fill/resources/fill.js",
-  ]
-}

ios/chrome/browser/autofill/manualfill/accessory_provider.h

+// Copyright 2018 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.
+
+#ifndef IOS_CHROME_BROWSER_AUTOFILL_MANUALFILL_ACCESSORY_PROVIDER_H_
+#define IOS_CHROME_BROWSER_AUTOFILL_MANUALFILL_ACCESSORY_PROVIDER_H_
+
+#import "ios/chrome/browser/autofill/form_input_accessory_view_provider.h"
+
+// Returns a default keyboard accessory view with entry points to manual
+// fallbacks for form filling.
+@interface ManualfillAccessoryProvider
+    : NSObject<FormInputAccessoryViewProvider>
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_AUTOFILL_MANUALFILL_ACCESSORY_PROVIDER_H_

ios/chrome/browser/autofill/manualfill/accessory_provider.mm

+// Copyright 2018 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/chrome/browser/autofill/manualfill_accessory_provider.h"
+
+#include "base/feature_list.h"
+#import "base/mac/foundation_util.h"
+#include "components/autofill/core/common/autofill_features.h"
+#import "ios/chrome/browser/ui/autofill/manualfill/keyboard_accessory_view.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+@interface ManualfillAccessoryProvider ()
+
+// The default accesory view to return in the update block.
+@property(nonatomic, readonly) KeyboardAccessoryView* accessoryView;
+
+// Callback to update the accessory view.
+@property(nonatomic, copy)
+    AccessoryViewReadyCompletion accessoryViewUpdateBlock;
+
+@end
+
+@implementation ManualfillAccessoryProvider
+
+@synthesize accessoryViewDelegate = _accessoryViewDelegate;
+@synthesize accessoryView = _accessoryView;
+@synthesize accessoryViewUpdateBlock = _accessoryViewUpdateBlock;
+
+#pragma mark - FormInputAccessoryViewProvider
+
+- (void)retrieveAccessoryViewForForm:(const web::FormActivityParams&)params
+                            webState:(web::WebState*)webState
+            accessoryViewUpdateBlock:
+                (AccessoryViewReadyCompletion)accessoryViewUpdateBlock {
+  DCHECK(accessoryViewUpdateBlock);
+  BOOL isManualfillEnabled =
+      base::FeatureList::IsEnabled(autofill::features::kAutofillManualFallback);
+  if (!isManualfillEnabled) {
+    accessoryViewUpdateBlock(nil, self);
+    return;
+  }
+  accessoryViewUpdateBlock(self.accessoryView, self);
+  self.accessoryViewUpdateBlock = accessoryViewUpdateBlock;
+}
+
+- (void)inputAccessoryViewControllerDidReset:
+    (FormInputAccessoryViewController*)controller {
+  self.accessoryViewUpdateBlock = nil;
+}
+
+- (void)resizeAccessoryView {
+  DCHECK(_accessoryViewUpdateBlock);
+  self.accessoryViewUpdateBlock(self.accessoryView, self);
+}
+
+#pragma mark - Getters
+
+- (KeyboardAccessoryView*)accessoryView {
+  if (!_accessoryView) {
+    _accessoryView = [[KeyboardAccessoryView alloc] initWithDelegate:nil];
+  }
+  return _accessoryView;
+}
+
+@end