Added ability to set ChromeDownloadManagerDelegate for testing.

chrome/test/base/testing_profile.cc

Index: chrome/test/base/testing_profile.cc
diff --git a/chrome/test/base/testing_profile.cc b/chrome/test/base/testing_profile.cc
index dcb57ef6032245445e9e8404b4c2668a6f55dd51..5d035a48774fc6fc0ed254631859cd9cd6fd1124 100644
--- a/chrome/test/base/testing_profile.cc
+++ b/chrome/test/base/testing_profile.cc
@@ -786,6 +786,13 @@ prerender::PrerenderManager* TestingProfile::GetPrerenderManager() {
   return prerender_manager_.get();
 }
 
+void TestingProfile::SetDownloadManagerDelegate(
+    ChromeDownloadManagerDelegate* delegate) {
+  // Specially marked so errors from use will occur near to the site
+  // of the error.
+  NOTIMPLEMENTED();
+}
+
 PrefService* TestingProfile::GetOffTheRecordPrefs() {
   return NULL;
 }