Export all CWV* symbols from the ios/web_view dynamic library.

ios/web_view/public/cwv_web_view_configuration.h

Index: ios/web_view/public/cwv_web_view_configuration.h
diff --git a/ios/web_view/public/cwv_web_view_configuration.h b/ios/web_view/public/cwv_web_view_configuration.h
index 6be74da2d139f6fc2f7dc114faa2c42b72720cc2..5a61b55683a01e7120899f8de1726e92556b22a6 100644
--- a/ios/web_view/public/cwv_web_view_configuration.h
+++ b/ios/web_view/public/cwv_web_view_configuration.h
@@ -7,10 +7,19 @@
 
 #import <Foundation/Foundation.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
+
 @class CWVUserContentController;
 @class CWVWebsiteDataStore;
 
 // Configuration used for creation of a CWVWebView.
+CWV_EXPORT
 @interface CWVWebViewConfiguration : NSObject<NSCopying>
 
 // Configuration with persistent data store which stores all data on disk.