Added member data to classes to support download resumption.

content/browser/download/download_item.cc

Index: content/browser/download/download_item.cc
diff --git a/content/browser/download/download_item.cc b/content/browser/download/download_item.cc
index 3318a0769a6f2459d9971b7e6377d0a55e04db13..e9c90d4b1278fda87fb1b0ae74528f157805ab96 100644
--- a/content/browser/download/download_item.cc
+++ b/content/browser/download/download_item.cc
@@ -137,6 +137,10 @@ DownloadItem::DownloadItem(DownloadManager* download_manager,
       referrer_url_(info.referrer_url),
       total_bytes_(info.total_bytes),
       received_bytes_(info.received_bytes),
+      hash_state_(info.hash_state),
+      last_modified_time_(info.last_modified_time),
+      etag_(info.etag),
+      last_reason_(info.last_reason),
       start_tick_(base::TimeTicks()),
       state_(static_cast<DownloadState>(info.state)),
       start_time_(info.start_time),
@@ -182,6 +186,9 @@ DownloadItem::DownloadItem(DownloadManager* download_manager,
       referrer_charset_(info.referrer_charset),
       total_bytes_(info.total_bytes),
       received_bytes_(0),
+      hash_(DownloadItem::kEmptyFileHash),
+      last_modified_time_(info.last_modified),
+      etag_(info.etag),
       last_reason_(DOWNLOAD_INTERRUPT_REASON_NONE),
       start_tick_(base::TimeTicks::Now()),
       state_(IN_PROGRESS),
@@ -215,6 +222,7 @@ DownloadItem::DownloadItem(DownloadManager* download_manager,
       referrer_url_(GURL()),
       total_bytes_(0),
       received_bytes_(0),
+      hash_(DownloadItem::kEmptyFileHash),
       last_reason_(DOWNLOAD_INTERRUPT_REASON_NONE),
       start_tick_(base::TimeTicks::Now()),
       state_(IN_PROGRESS),
@@ -340,10 +348,17 @@ void DownloadItem::UpdateSize(int64 bytes_so_far) {
     total_bytes_ = 0;
 }
 
+void DownloadItem::UpdateSizeAndHashState(int64 bytes_so_far,
+                                          const Pickle& hash_state) {
+  hash_state_ = hash_state;
+
+  UpdateSize(bytes_so_far);
+}
+
 // Updates from the download thread may have been posted while this download
 // was being cancelled in the UI thread, so we'll accept them unless we're
 // complete.
-void DownloadItem::Update(int64 bytes_so_far) {
+void DownloadItem::Update(int64 bytes_so_far, const Pickle& hash_state) {
   // TODO(rdsmith): Change to DCHECK after http://crbug.com/85408 resolved.
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
@@ -351,7 +366,7 @@ void DownloadItem::Update(int64 bytes_so_far) {
     NOTREACHED();
     return;
   }
-  UpdateSize(bytes_so_far);
+  UpdateSizeAndHashState(bytes_so_far, hash_state);
   UpdateObservers();
 }
 
@@ -398,8 +413,8 @@ void DownloadItem::OnAllDataSaved(int64 size, const std::string& final_hash) {
 
   DCHECK(!all_data_saved_);
   all_data_saved_ = true;
-  UpdateSize(size);
   hash_ = final_hash;
+  UpdateSize(size);
 }
 
 void DownloadItem::OnDownloadedFileRemoved() {
@@ -460,7 +475,9 @@ void DownloadItem::UpdateTarget() {
     state_info_.target_name = full_path_.BaseName();
 }
 
-void DownloadItem::Interrupted(int64 size, InterruptReason reason) {
+void DownloadItem::Interrupted(int64 size,
+                               const Pickle& hash_state,
+                               InterruptReason reason) {
   // TODO(rdsmith): Change to DCHECK after http://crbug.com/85408 resolved.
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
@@ -468,7 +485,7 @@ void DownloadItem::Interrupted(int64 size, InterruptReason reason) {
     return;
 
   last_reason_ = reason;
-  UpdateSize(size);
+  UpdateSizeAndHashState(size, hash_state);
   download_stats::RecordDownloadInterrupted(reason,
                                             received_bytes_,
                                             total_bytes_);
@@ -693,7 +710,11 @@ DownloadPersistentStoreInfo DownloadItem::GetPersistentStoreInfo() const {
                                      total_bytes(),
                                      state(),
                                      db_handle(),
-                                     opened());
+                                     opened(),
+                                     hash_state_,
+                                     last_modified_time_,
+                                     etag_,
+                                     last_reason_);
 }
 
 TabContents* DownloadItem::GetTabContents() const {
@@ -738,9 +759,8 @@ void DownloadItem::Init(bool active) {
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   UpdateTarget();
-  if (active) {
+  if (active)
     download_stats::RecordDownloadCount(download_stats::START_COUNT);
-  }
   VLOG(20) << __FUNCTION__ << "() " << DebugString(true);
 }
 
@@ -801,6 +821,8 @@ std::string DownloadItem::DebugString(bool verbose) const {
         " is_paused = %c"
         " is_otr = %c"
         " safety_state = %s"
+        " last_modified = '%s'"
+        " etag = '%s'"
         " url_chain = \n\t\"%s\"\n\t"
         " target_name = \"%" PRFilePath "\""
         " full_path = \"%" PRFilePath "\"",
@@ -810,6 +832,8 @@ std::string DownloadItem::DebugString(bool verbose) const {
         is_paused() ? 'T' : 'F',
         is_otr() ? 'T' : 'F',
         DebugSafetyStateString(safety_state()),
+        last_modified_time_.c_str(),
+        etag_.c_str(),
         url_list.c_str(),
         state_info_.target_name.value().c_str(),
         full_path().value().c_str());