Flesh out URLLoader's download_to_file function.

* tie the lifetime of the resulting temp file to the lifetime of the URLLoader
  (the plan is to later extend the lifetime of the temp file to support xhr.responseBlob)
* make it work in test_shell
* make it work for sync requests
* added OnDataDownloaded messages to report progress

A related BlobURL loading change.
* grab a reference to the blob early on to ensure it's still there when the 'job' is finally started.

TEST=manual and deletable_file_reference_unittest.cc
BUG=52486

Review URL: http://codereview.chromium.org/3165062

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@60378 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 8 insertions, 0 deletions

diff --git a/chrome/common/resource_dispatcher.h b/chrome/common/resource_dispatcher.h
index e2a2de0..77e08ac 100644
--- a/chrome/common/resource_dispatcher.h
+++ b/chrome/common/resource_dispatcher.h
@@ -82,6 +82,10 @@ class ResourceDispatcher {
   };
   typedef base::hash_map<int, PendingRequestInfo> PendingRequestList;
 
+  // Helper to lookup the info based on the request_id.
+  // May return NULL if the request as been canceled from the client side.
+  PendingRequestInfo* GetPendingRequestInfo(int request_id);
+
   // Message response handlers, called by the message handler for this process.
   void OnUploadProgress(
       const IPC::Message& message,
@@ -100,6 +104,10 @@ class ResourceDispatcher {
       int request_id,
       base::SharedMemoryHandle data,
       int data_len);
+  void OnDownloadedData(
+      const IPC::Message& message,
+      int request_id,
+      int data_len);
   void OnRequestComplete(
       int request_id,
       const URLRequestStatus& status,