Implemented new Translate API for purely Objective-C clients.

ios/web_view/shell/shell_view_controller.m

 // Copyright 2014 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/web_view/shell/shell_view_controller.h"
 
 #import <ChromeWebView/ChromeWebView.h>
 #import <MobileCoreServices/MobileCoreServices.h>
 
-#import "ios/web_view/shell/translate_controller.h"
+#import "ios/web_view/shell/shell_translation_delegate.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 // Externed accessibility identifier.
 NSString* const kWebViewShellBackButtonAccessibilityLabel = @"Back";
 NSString* const kWebViewShellForwardButtonAccessibilityLabel = @"Forward";
 NSString* const kWebViewShellAddressFieldAccessibilityLabel = @"Address field";
 NSString* const kWebViewShellJavaScriptDialogTextFieldAccessibiltyIdentifier =
     @"WebViewShellJavaScriptDialogTextFieldAccessibiltyIdentifier";
 
 @interface ShellViewController ()<CWVNavigationDelegate,
                                   CWVUIDelegate,
                                   UITextFieldDelegate>
 // Container for |webView|.
 @property(nonatomic, strong) UIView* containerView;
 // Text field used for navigating to URLs.
 @property(nonatomic, strong) UITextField* field;
 // Toolbar containing navigation buttons and |field|.
 @property(nonatomic, strong) UIToolbar* toolbar;
 // CWV view which renders the web page.
 @property(nonatomic, strong) CWVWebView* webView;
 // Handles the translation of the content displayed in |webView|.
-@property(nonatomic, strong) TranslateController* translateController;
+@property(nonatomic, strong) ShellTranslationDelegate* translationDelegate;
 
 - (void)back;
 - (void)forward;
 - (void)stopLoading;
 @end
 
 @implementation ShellViewController
 
 @synthesize containerView = _containerView;
 @synthesize field = _field;
 @synthesize toolbar = _toolbar;
 @synthesize webView = _webView;
-@synthesize translateController = _translateController;
+@synthesize translationDelegate = _translationDelegate;
 
 - (void)viewDidLoad {
   [super viewDidLoad];
 
   CGRect bounds = self.view.bounds;
 
   // Set up the toolbar.
   self.toolbar = [[UIToolbar alloc] init];
   [_toolbar setBarTintColor:[UIColor colorWithRed:0.337
                                             green:0.467
@@ skipping 89 matching lines @@
   [CWVWebView setUserAgentProduct:@"Dummy/1.0"];
 
   CWVWebViewConfiguration* configuration =
       [CWVWebViewConfiguration defaultConfiguration];
   self.webView = [[CWVWebView alloc] initWithFrame:[_containerView bounds]
                                      configuration:configuration];
   // Gives a restoration identifier so that state restoration works.
   _webView.restorationIdentifier = @"webView";
   _webView.navigationDelegate = self;
   _webView.UIDelegate = self;
-  _translateController = [[TranslateController alloc] init];
-  _webView.translationDelegate = _translateController;
+  _translationDelegate = [[ShellTranslationDelegate alloc] init];
+  _webView.translationController.delegate = _translationDelegate;
 
   [_webView setAutoresizingMask:UIViewAutoresizingFlexibleWidth |
                                 UIViewAutoresizingFlexibleHeight];
   [_containerView addSubview:_webView];
 
   NSURLRequest* request = [NSURLRequest
       requestWithURL:[NSURL URLWithString:@"https://www.google.com/"]];
   [_webView loadRequest:request];
 }
 
@@ skipping 219 matching lines @@
   // TODO(crbug.com/679895): Add some visual indication that the page load has
   // finished.
   [self updateToolbar];
 }
 
 - (void)webViewWebContentProcessDidTerminate:(CWVWebView*)webView {
   NSLog(@"webViewWebContentProcessDidTerminate");
 }
 
 @end