Media Galleries API Picasa: Fix PicasaFileUtil GetInfoSync minor bug.

NativeMediaFileUtil allows GetInfoSync to be called with a NULL |platform_path|. This change brings PicasaFileUtil behavior in line with that.

BUG=151701

Review URL: https://chromiumcodereview.appspot.com/23442026

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@223521 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/media_galleries/fileapi/picasa_file_util.cc

@@ -103,9 +103,9 @@ base::PlatformFileError PicasaFileUtil::GetFileInfoSync(
     base::PlatformFileInfo* file_info, base::FilePath* platform_path) {
   DCHECK(context);
   DCHECK(file_info);
-  DCHECK(platform_path);
 
-  *platform_path = base::FilePath();
+  if (platform_path)
+    *platform_path = base::FilePath();
 
   std::vector<std::string> components;
   fileapi::VirtualPath::GetComponentsUTF8Unsafe(url.path(), &components);