Dispatch encoded_data_length separately in content/child

content/child/shared_memory_data_consumer_handle.cc

Index: content/child/shared_memory_data_consumer_handle.cc
diff --git a/content/child/shared_memory_data_consumer_handle.cc b/content/child/shared_memory_data_consumer_handle.cc
index 091eb50c7de0cd92ba49d58a78fd428b92135ff2..cff0b116e5da8e591b5b89d35930e6408c8ec180 100644
--- a/content/child/shared_memory_data_consumer_handle.cc
+++ b/content/child/shared_memory_data_consumer_handle.cc
@@ -37,9 +37,6 @@ class DelegateThreadSafeReceivedData final
 
   const char* payload() const override { return data_->payload(); }
   int length() const override { return data_->length(); }
-  int encoded_data_length() const override {
-    return data_->encoded_data_length();
-  }
 
  private:
   std::unique_ptr<RequestPeer::ReceivedData> data_;