[Downloads] Move client guid for AV scanning of downloaded files to chrome/

chrome/browser/media_galleries/fileapi/supported_image_type_validator.cc

Index: chrome/browser/media_galleries/fileapi/supported_image_type_validator.cc
diff --git a/chrome/browser/media_galleries/fileapi/supported_image_type_validator.cc b/chrome/browser/media_galleries/fileapi/supported_image_type_validator.cc
index 9ae76253c3bb4db6d4584970202449ed06684405..57f54a945e54a799d98b2c9f82f0fd84ebf4639c 100644
--- a/chrome/browser/media_galleries/fileapi/supported_image_type_validator.cc
+++ b/chrome/browser/media_galleries/fileapi/supported_image_type_validator.cc
@@ -16,6 +16,10 @@
 #include "chrome/browser/image_decoder.h"
 #include "content/public/browser/browser_thread.h"
 
+#if defined(OS_WIN)
+#include "base/file_util.h"
+#endif
+
 using content::BrowserThread;
 
 namespace chrome {
@@ -116,19 +120,6 @@ void SupportedImageTypeValidator::StartPreWriteValidation(
                  weak_factory_.GetWeakPtr()));
 }
 
-void SupportedImageTypeValidator::StartPostWriteValidation(
-    const base::FilePath& dest_platform_path,
-    const ResultCallback& result_callback) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  post_write_callback_ = result_callback;
-
-  // TODO(gbillock): Insert AV call here in the right validator.
-  BrowserThread::PostTask(
-      BrowserThread::IO,
-      FROM_HERE,
-      base::Bind(post_write_callback_, base::PLATFORM_FILE_OK));
-}
-
 SupportedImageTypeValidator::SupportedImageTypeValidator(
     const base::FilePath& path)
     : path_(path),