Add mechanism to auto mount file systems in response to a URL request.

This code adds a hook for when a file system URL request can not be cracked.
It will allow external media galleries file systems to be lazily created.

BUG=160900

Review URL: https://codereview.chromium.org/195923002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@258064 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 19 insertions, 0 deletions

diff --git a/webkit/browser/fileapi/file_system_url_request_job.cc b/webkit/browser/fileapi/file_system_url_request_job.cc
index fe445649..8ccc5bb 100644
--- a/webkit/browser/fileapi/file_system_url_request_job.cc
+++ b/webkit/browser/fileapi/file_system_url_request_job.cc
@@ -57,8 +57,10 @@ static net::HttpResponseHeaders* CreateHttpResponseHeaders() {
 FileSystemURLRequestJob::FileSystemURLRequestJob(
     URLRequest* request,
     NetworkDelegate* network_delegate,
+    const std::string& storage_domain,
     FileSystemContext* file_system_context)
     : URLRequestJob(request, network_delegate),
+      storage_domain_(storage_domain),
       file_system_context_(file_system_context),
       is_directory_(false),
       remaining_bytes_(0),
@@ -157,6 +159,14 @@ void FileSystemURLRequestJob::StartAsync() {
     return;
   DCHECK(!reader_.get());
   url_ = file_system_context_->CrackURL(request_->url());
+  if (!url_.is_valid()) {
+    file_system_context_->AttemptAutoMountForURLRequest(
+        request_,
+        storage_domain_,
+        base::Bind(&FileSystemURLRequestJob::DidAttemptAutoMount,
+                   weak_factory_.GetWeakPtr()));
+    return;
+  }
   if (!file_system_context_->CanServeURLRequest(url_)) {
     // In incognito mode the API is not usable and there should be no data.
     NotifyFailed(net::ERR_FILE_NOT_FOUND);
@@ -168,6 +178,15 @@ void FileSystemURLRequestJob::StartAsync() {
                  weak_factory_.GetWeakPtr()));
 }
 
+void FileSystemURLRequestJob::DidAttemptAutoMount(base::File::Error result) {
+  if (result >= 0 &&
+      file_system_context_->CrackURL(request_->url()).is_valid()) {
+    StartAsync();
+  } else {
+    NotifyFailed(net::ERR_FILE_NOT_FOUND);
+  }
+}
+
 void FileSystemURLRequestJob::DidGetMetadata(
     base::File::Error error_code,
     const base::File::Info& file_info) {