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

ios/web_view/public/cwv_translate_delegate.h

Index: ios/web_view/public/cwv_translate_delegate.h
diff --git a/ios/web_view/public/cwv_translate_delegate.h b/ios/web_view/public/cwv_translate_delegate.h
index ff3576cef579c8ff5b570a9945e6a7f615068824..fc846f2caaafe8c3302372c1d18b9ea544fd9844 100644
--- a/ios/web_view/public/cwv_translate_delegate.h
+++ b/ios/web_view/public/cwv_translate_delegate.h
@@ -7,6 +7,14 @@
 
 #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
+
 @protocol CRIWVTranslateManager;
 
 typedef NS_ENUM(NSInteger, CRIWVTransateStep) {
@@ -18,6 +26,7 @@ typedef NS_ENUM(NSInteger, CRIWVTransateStep) {
 
 // Delegate interface for the CRIWVTranslate.  Embedders can implement the
 // functions in order to customize the behavior.
+CWV_EXPORT
 @protocol CWVTranslateDelegate
 
 - (void)translateStepChanged:(CRIWVTransateStep)step