Coverity: Fix an uninitialized member variable.

webkit/fileapi/file_system_operation.cc

Index: webkit/fileapi/file_system_operation.cc
diff --git a/webkit/fileapi/file_system_operation.cc b/webkit/fileapi/file_system_operation.cc
index 67d33a6b987c4bf0a68fd63641e3558f7f9aef04..777790cce6d22964ecc3c5e5276039dd19e142c5 100644
--- a/webkit/fileapi/file_system_operation.cc
+++ b/webkit/fileapi/file_system_operation.cc
@@ -71,7 +71,10 @@ FileSystemOperation::ScopedQuotaNotifier::~ScopedQuotaNotifier() {
   }
 }
 
-FileSystemOperation::TaskParamsForDidGetQuota::TaskParamsForDidGetQuota() {}
+FileSystemOperation::TaskParamsForDidGetQuota::TaskParamsForDidGetQuota()
+    : type(kFileSystemTypeUnknown) {
+}
+
 FileSystemOperation::TaskParamsForDidGetQuota::~TaskParamsForDidGetQuota() {}
 
 FileSystemOperation::~FileSystemOperation() {