[Resumption 9/11] Handle filename determination for resumed downloads.

chrome/browser/download/chrome_download_manager_delegate.cc

Index: chrome/browser/download/chrome_download_manager_delegate.cc
diff --git a/chrome/browser/download/chrome_download_manager_delegate.cc b/chrome/browser/download/chrome_download_manager_delegate.cc
index 5482a50688408594183bc7c0e604e48a4e9fd63e..0ba4300afda1ae4b606507d975e80ca5611353f9 100644
--- a/chrome/browser/download/chrome_download_manager_delegate.cc
+++ b/chrome/browser/download/chrome_download_manager_delegate.cc
@@ -109,14 +109,12 @@ base::FilePath GetPlatformDownloadPath(Profile* profile,
   //     file exits yet, use GetFullPath(). This should only happen during
   //     ShowDownloadInShell().
   // - Not Complete, and there's no intermediate file: GetFullPath() will be
-  //     empty. This shouldn't happen since CanShowInFolder() returns false and
-  //     this function shouldn't have been called.
+  //     empty.
   if (download->IsComplete()) {
     DCHECK(!download->GetTargetFilePath().empty());
     return download->GetTargetFilePath();
   }
 
-  DCHECK(!download->GetFullPath().empty());
   return download->GetFullPath();
 }
 
@@ -193,6 +191,7 @@ bool ChromeDownloadManagerDelegate::DetermineDownloadTarget(
     DownloadItem* download,
     const content::DownloadTargetCallback& callback) {
   DownloadTargetDeterminer::Start(download,
+                                  GetPlatformDownloadPath(profile_, download),
                                   download_prefs_.get(),
                                   last_download_path_,
                                   this,
@@ -372,14 +371,18 @@ void ChromeDownloadManagerDelegate::OpenDownload(DownloadItem* download) {
   DCHECK(download->IsComplete());
   if (!download->CanOpenDownload())
     return;
-  platform_util::OpenItem(GetPlatformDownloadPath(profile_, download));
+  base::FilePath platform_path(GetPlatformDownloadPath(profile_, download));
+  DCHECK(!platform_path.empty());
+  platform_util::OpenItem(platform_path);
 }
 
 void ChromeDownloadManagerDelegate::ShowDownloadInShell(
     DownloadItem* download) {
   if (!download->CanShowInFolder())
     return;
-  platform_util::ShowItemInFolder(GetPlatformDownloadPath(profile_, download));
+  base::FilePath platform_path(GetPlatformDownloadPath(profile_, download));
+  DCHECK(!platform_path.empty());
+  platform_util::ShowItemInFolder(platform_path);
 }
 
 void ChromeDownloadManagerDelegate::CheckForFileExistence(