Add Chromium side implementation for WebFileSystem interface in WebKit.

BUG=none
TEST=non

Review URL: http://codereview.chromium.org/1748015

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@46625 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 13 insertions, 5 deletions

diff --git a/net/base/file_stream.h b/net/base/file_stream.h
index 6b7f3dc..ff9e7a6 100644
--- a/net/base/file_stream.h
+++ b/net/base/file_stream.h
@@ -34,6 +34,8 @@ class FileStream {
   // |file| is valid file handle.
   // |flags| is a bitfield of base::PlatformFileFlags when the file handle was
   // opened.
+  // The already opened file will not be automatically closed when FileStream
+  // is destructed.
   FileStream(base::PlatformFile file, int flags);
 
   ~FileStream();
@@ -128,6 +130,7 @@ class FileStream {
 
   base::PlatformFile file_;
   int open_flags_;
+  bool auto_closed_;
 
   DISALLOW_COPY_AND_ASSIGN(FileStream);
 };
diff --git a/net/base/file_stream_posix.cc b/net/base/file_stream_posix.cc
index a4c5b3c..65c8e2b 100644
--- a/net/base/file_stream_posix.cc
+++ b/net/base/file_stream_posix.cc
@@ -293,13 +293,15 @@ void FileStream::AsyncContext::RunAsynchronousCallback() {
 
 FileStream::FileStream()
     : file_(base::kInvalidPlatformFileValue),
-      open_flags_(0) {
+      open_flags_(0),
+      auto_closed_(true) {
   DCHECK(!IsOpen());
 }
 
 FileStream::FileStream(base::PlatformFile file, int flags)
     : file_(file),
-      open_flags_(flags) {
+      open_flags_(flags),
+      auto_closed_(false) {
   // If the file handle is opened with base::PLATFORM_FILE_ASYNC, we need to
   // make sure we will perform asynchronous File IO to it.
   if (flags & base::PLATFORM_FILE_ASYNC) {
diff --git a/net/base/file_stream_win.cc b/net/base/file_stream_win.cc
index cec6a9d..1ad9a34 100644
--- a/net/base/file_stream_win.cc
+++ b/net/base/file_stream_win.cc
@@ -117,12 +117,14 @@ void FileStream::AsyncContext::OnIOCompleted(
 
 FileStream::FileStream()
     : file_(INVALID_HANDLE_VALUE),
-      open_flags_(0) {
+      open_flags_(0),
+      auto_closed_(true) {
 }
 
 FileStream::FileStream(base::PlatformFile file, int flags)
     : file_(file),
-      open_flags_(flags) {
+      open_flags_(flags),
+      auto_closed_(false) {
   // If the file handle is opened with base::PLATFORM_FILE_ASYNC, we need to
   // make sure we will perform asynchronous File IO to it.
   if (flags & base::PLATFORM_FILE_ASYNC) {
@@ -133,7 +135,8 @@ FileStream::FileStream(base::PlatformFile file, int flags)
 }
 
 FileStream::~FileStream() {
-  Close();
+  if (auto_closed_)
+    Close();
 }
 
 void FileStream::Close() {