Remove CWVDelegate.

ios/web_view/internal/web_view_web_client.mm

Index: ios/web_view/internal/web_view_web_client.mm
diff --git a/ios/web_view/internal/web_view_web_client.mm b/ios/web_view/internal/web_view_web_client.mm
index 56aed9bfd7c5c71e84f0f0eb13f8246ffa7f82b1..a9c60a05d0ff75b889784b9d4d94aec7c0e5086e 100644
--- a/ios/web_view/internal/web_view_web_client.mm
+++ b/ios/web_view/internal/web_view_web_client.mm
@@ -4,12 +4,10 @@
 
 #import "ios/web_view/internal/web_view_web_client.h"
 
-#include "base/strings/sys_string_conversions.h"
 #include "ios/web/public/user_agent.h"
 #include "ios/web_view/internal/web_view_browser_state.h"
 #import "ios/web_view/internal/web_view_early_page_script_provider.h"
 #import "ios/web_view/internal/web_view_web_main_parts.h"
-#import "ios/web_view/public/cwv_delegate.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
@@ -17,13 +15,13 @@
 
 namespace ios_web_view {
 
-WebViewWebClient::WebViewWebClient(id<CWVDelegate> delegate)
-    : delegate_(delegate), web_main_parts_(nullptr) {}
+WebViewWebClient::WebViewWebClient(const std::string& user_agent_product)
+    : user_agent_product_(user_agent_product), web_main_parts_(nullptr) {}
 
 WebViewWebClient::~WebViewWebClient() = default;
 
 web::WebMainParts* WebViewWebClient::CreateWebMainParts() {
-  web_main_parts_ = new WebViewWebMainParts(delegate_);
+  web_main_parts_ = new WebViewWebMainParts();
   return web_main_parts_;
 }
 
@@ -36,7 +34,7 @@ WebViewBrowserState* WebViewWebClient::off_the_record_browser_state() const {
 }
 
 std::string WebViewWebClient::GetProduct() const {
-  return base::SysNSStringToUTF8([delegate_ partialUserAgent]);
+  return user_agent_product_;
 }
 
 std::string WebViewWebClient::GetUserAgent(web::UserAgentType type) const {