Add net::HttpServer::Delegate::OnConnect() function and set ChromeDriver buffer sizes to 100 MB

net/server/http_server_unittest.cc

Index: net/server/http_server_unittest.cc
diff --git a/net/server/http_server_unittest.cc b/net/server/http_server_unittest.cc
index 42e56399a10afc4d3ed71d17ebe8573957fad1f8..5db417edd6db0f34542386fb078e6aac07b79f1c 100644
--- a/net/server/http_server_unittest.cc
+++ b/net/server/http_server_unittest.cc
@@ -189,6 +189,8 @@ class HttpServerTest : public testing::Test,
     ASSERT_EQ(OK, server_->GetLocalAddress(&server_address_));
   }
 
+  virtual void OnConnect(int connection_id) OVERRIDE {}
+
   virtual void OnHttpRequest(int connection_id,
                              const HttpServerRequestInfo& info) OVERRIDE {
     requests_.push_back(std::make_pair(info, connection_id));