Replace prefix of ios/web_view C++ classes.

ios/web_view/internal/cwv.mm

 // 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/public/cwv.h"
 
 #include <memory>
 
 #include "base/location.h"
 #import "base/mac/bind_objc_block.h"
+#include "base/memory/ptr_util.h"
 #include "base/single_thread_task_runner.h"
 #include "ios/web/public/app/web_main.h"
 #include "ios/web/public/web_thread.h"
-#import "ios/web_view/internal/criwv_web_main_delegate.h"
+#import "ios/web_view/internal/web_view_web_main_delegate.h"
 #import "ios/web_view/public/cwv_delegate.h"
 #import "ios/web_view/public/cwv_web_view.h"
 #import "ios/web_view/public/cwv_web_view_configuration.h"
 #import "ios/web_view/public/cwv_website_data_store.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 namespace {
 CWV* g_criwv = nil;
 }
 
 @interface CWV () {
-  std::unique_ptr<ios_web_view::CRIWVWebMainDelegate> _webMainDelegate;
+  std::unique_ptr<ios_web_view::WebViewWebMainDelegate> _webMainDelegate;
   std::unique_ptr<web::WebMain> _webMain;
 }
 
 @property(nonatomic, weak) id<CWVDelegate> delegate;
 
 - (instancetype)initWithDelegate:(id<CWVDelegate>)delegate;
 @end
 
 @implementation CWV
 
@@ skipping 12 matching lines @@
       [[CWVWebViewConfiguration alloc] init];
   configuration.websiteDataStore = [CWVWebsiteDataStore defaultDataStore];
 
   return [[CWVWebView alloc] initWithFrame:frame configuration:configuration];
 }
 
 - (instancetype)initWithDelegate:(id<CWVDelegate>)delegate {
   self = [super init];
   if (self) {
     _delegate = delegate;
-    _webMainDelegate.reset(new ios_web_view::CRIWVWebMainDelegate(_delegate));
+    _webMainDelegate =
+        base::MakeUnique<ios_web_view::WebViewWebMainDelegate>(_delegate);
     web::WebMainParams params(_webMainDelegate.get());
-    _webMain.reset(new web::WebMain(params));
+    _webMain = base::MakeUnique<web::WebMain>(params);
   }
   return self;
 }
 
 - (void)dealloc {
   _webMain.reset();
   _webMainDelegate.reset();
 }
 
 @end