Ensure framework path is set before any web objects are created.

ios/web_view/internal/web_view_web_main_delegate.mm

Index: ios/web_view/internal/web_view_web_main_delegate.mm
diff --git a/ios/web_view/internal/web_view_web_main_delegate.mm b/ios/web_view/internal/web_view_web_main_delegate.mm
index 47983b49a8fc34463bb4ceddafad113d714ea5da..83188ce85c46a185f0b127497b8e07011a2a7092 100644
--- a/ios/web_view/internal/web_view_web_main_delegate.mm
+++ b/ios/web_view/internal/web_view_web_main_delegate.mm
@@ -4,9 +4,11 @@
 
 #import "ios/web_view/internal/web_view_web_main_delegate.h"
 
+#import "base/mac/bundle_locations.h"
 #include "base/memory/ptr_util.h"
 #import "ios/web_view/internal/web_view_web_client.h"
 #import "ios/web_view/public/cwv_delegate.h"
+#import "ios/web_view/public/cwv_web_view.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
@@ -20,6 +22,8 @@ WebViewWebMainDelegate::WebViewWebMainDelegate(id<CWVDelegate> delegate)
 WebViewWebMainDelegate::~WebViewWebMainDelegate() = default;
 
 void WebViewWebMainDelegate::BasicStartupComplete() {
+  base::mac::SetOverrideFrameworkBundle(
+      [NSBundle bundleForClass:[CWVWebView class]]);
   web_client_ = base::MakeUnique<WebViewWebClient>(delegate_);
   web::SetWebClient(web_client_.get());
 }