Remove CWV_IMPLEMENTATION hack.

ios/web_view/public/cwv_web_view.h

 // 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.
 #ifndef IOS_WEB_VIEW_PUBLIC_CWV_WEB_VIEW_H_
 #define IOS_WEB_VIEW_PUBLIC_CWV_WEB_VIEW_H_
 
 #import <UIKit/UIKit.h>
 
-// TODO(crbug.com/704946): Make framework style include work everywhere and
-// remove this #if.
-#if defined(CWV_IMPLEMENTATION)
-#include "ios/web_view/public/cwv_export.h"
-#else
-#include <ChromeWebView/cwv_export.h>
-#endif
+#include "cwv_export.h"
 
 @class CWVWebViewConfiguration;
 @protocol CWVUIDelegate;
 @protocol CWVTranslateDelegate;
 @protocol CWVNavigationDelegate;
 
 // A web view component (like WKWebView) which uses iOS Chromium's web view
 // implementation.
 //
 // In addition to WKWebView features, it allows Translate, Find In Page,
@@ skipping 59 matching lines @@
 - (void)loadRequest:(NSURLRequest*)request;
 
 // Evaluates a JavaScript string.
 // The completion handler is invoked when script evaluation completes.
 - (void)evaluateJavaScript:(NSString*)javaScriptString
          completionHandler:(void (^)(id, NSError*))completionHandler;
 
 @end
 
 #endif  // IOS_WEB_VIEW_PUBLIC_CWV_WEB_VIEW_H_