Revert of Use IOSImageDataFetcherWrapper for favicon

components/image_fetcher/image_data_fetcher_unittest.cc

Index: components/image_fetcher/image_data_fetcher_unittest.cc
diff --git a/components/image_fetcher/image_data_fetcher_unittest.cc b/components/image_fetcher/image_data_fetcher_unittest.cc
index 15039781fb4a9f2fd8f002491c44e16e8e28c2a8..10382231198f6293f447435018c34f16edc1fe98 100644
--- a/components/image_fetcher/image_data_fetcher_unittest.cc
+++ b/components/image_fetcher/image_data_fetcher_unittest.cc
@@ -11,7 +11,6 @@
 #include "base/memory/ref_counted.h"
 #include "base/message_loop/message_loop.h"
 #include "net/http/http_response_headers.h"
-#include "net/http/http_status_code.h"
 #include "net/url_request/test_url_fetcher_factory.h"
 #include "net/url_request/url_request_status.h"
 #include "net/url_request/url_request_test_util.h"
@@ -65,7 +64,6 @@
 
   RequestMetadata expected_metadata;
   expected_metadata.mime_type = std::string("image/png");
-  expected_metadata.response_code = net::HTTP_OK;
   EXPECT_CALL(*this, OnImageDataFetched(std::string(kURLResponseData),
                                         expected_metadata));
 
@@ -75,7 +73,6 @@
   test_url_fetcher->set_status(
       net::URLRequestStatus(net::URLRequestStatus::SUCCESS, net::OK));
   test_url_fetcher->SetResponseString(kURLResponseData);
-  test_url_fetcher->set_response_code(net::HTTP_OK);
 
   std::string raw_header =
       "HTTP/1.1 200 OK\n"
@@ -97,7 +94,6 @@
 
   RequestMetadata expected_metadata;
   expected_metadata.mime_type = std::string("image/png");
-  expected_metadata.response_code = net::HTTP_NOT_FOUND;
   // For 404, expect an empty result even though correct image data is sent.
   EXPECT_CALL(*this, OnImageDataFetched(std::string(), expected_metadata));
 
@@ -128,7 +124,6 @@
                  base::Unretained(this)));
 
   RequestMetadata expected_metadata;
-  expected_metadata.response_code = net::URLFetcher::RESPONSE_CODE_INVALID;
   EXPECT_CALL(
       *this, OnImageDataFetchedFailedRequest(std::string(), expected_metadata));