Revert of Fixing renderer's access to a file from HTTP POST (after a xsite transfer).

content/browser/frame_host/render_frame_host_manager_browsertest.cc

Index: content/browser/frame_host/render_frame_host_manager_browsertest.cc
diff --git a/content/browser/frame_host/render_frame_host_manager_browsertest.cc b/content/browser/frame_host/render_frame_host_manager_browsertest.cc
index 6100a740016ec2b664e56497ebca650c637a049f..10fa48b1d89ab1bf1d4abe58a18622aa1ab53adf 100644
--- a/content/browser/frame_host/render_frame_host_manager_browsertest.cc
+++ b/content/browser/frame_host/render_frame_host_manager_browsertest.cc
@@ -5,7 +5,6 @@
 #include <stddef.h>
 #include <stdint.h>
 
-#include <memory>
 #include <set>
 
 #include "base/command_line.h"
@@ -39,6 +38,8 @@
 #include "content/public/common/bindings_policy.h"
 #include "content/public/common/browser_side_navigation_policy.h"
 #include "content/public/common/content_switches.h"
+#include "content/public/common/file_chooser_file_info.h"
+#include "content/public/common/file_chooser_params.h"
 #include "content/public/common/page_state.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/test/browser_test_utils.h"
@@ -1928,6 +1929,30 @@
 
   EXPECT_FALSE(handler->IsJavascriptAllowed());
 }
+
+class FileChooserDelegate : public WebContentsDelegate {
+ public:
+  FileChooserDelegate(const base::FilePath& file)
+      : file_(file), file_chosen_(false) {}
+
+  void RunFileChooser(RenderFrameHost* render_frame_host,
+                      const FileChooserParams& params) override {
+    // Send the selected file to the renderer process.
+    FileChooserFileInfo file_info;
+    file_info.file_path = file_;
+    std::vector<FileChooserFileInfo> files;
+    files.push_back(file_info);
+    render_frame_host->FilesSelectedInChooser(files, FileChooserParams::Open);
+
+    file_chosen_ = true;
+  }
+
+  bool file_chosen() { return file_chosen_; }
+
+ private:
+  base::FilePath file_;
+  bool file_chosen_;
+};
 
 // Test for http://crbug.com/262948.
 IN_PROC_BROWSER_TEST_F(RenderFrameHostManagerTest,