ResourceHandler::OnWillStart: Remove min_size argument.

content/browser/loader/mime_sniffing_resource_handler_unittest.cc

Index: content/browser/loader/mime_sniffing_resource_handler_unittest.cc
diff --git a/content/browser/loader/mime_sniffing_resource_handler_unittest.cc b/content/browser/loader/mime_sniffing_resource_handler_unittest.cc
index 5580e9a3349932bf1287d6c1b82b9d86a943e3bb..0cc90f6096dbe970c18ef8d960ee8fc48db27c57 100644
--- a/content/browser/loader/mime_sniffing_resource_handler_unittest.cc
+++ b/content/browser/loader/mime_sniffing_resource_handler_unittest.cc
@@ -367,7 +367,7 @@ void MimeSniffingResourceHandlerTest::TestHandlerSniffing(
 
   // Read some data to sniff the mime type. This will ask the next
   // ResourceHandler for a buffer.
-  mock_loader.OnWillRead(-1);
+  mock_loader.OnWillRead();
 
   if (!will_read) {
     EXPECT_EQ(MockResourceLoader::Status::CANCELED, mock_loader.status());
@@ -543,7 +543,7 @@ void MimeSniffingResourceHandlerTest::TestHandlerNoSniffing(
 
   // The MimeSniffingResourceHandler should be acting as a pass-through
   // ResourceHandler.
-  mock_loader.OnWillRead(-1);
+  mock_loader.OnWillRead();
 
   if (!will_read) {
     EXPECT_EQ(MockResourceLoader::Status::CANCELED, mock_loader.status());