Move download extension api implementation to download/ dir.

chrome/browser/download/download_extension_api.cc

Index: chrome/browser/download/download_extension_api.cc
diff --git a/chrome/browser/extensions/extension_downloads_api.cc b/chrome/browser/download/download_extension_api.cc
similarity index 98%
rename from chrome/browser/extensions/extension_downloads_api.cc
rename to chrome/browser/download/download_extension_api.cc
index 8e4657fb85bc80b39f210fccd1a64bfaa1d13477..5f3148a971b4e9a1e466511cdd188665ccd4e608 100644
--- a/chrome/browser/extensions/extension_downloads_api.cc
+++ b/chrome/browser/download/download_extension_api.cc
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/browser/extensions/extension_downloads_api.h"
+#include "chrome/browser/download/download_extension_api.h"
 
 #include <algorithm>
 #include <cctype>
@@ -21,10 +21,10 @@
 #include "base/stringprintf.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
+#include "chrome/browser/download/download_extension_api_constants.h"
 #include "chrome/browser/download/download_service.h"
 #include "chrome/browser/download/download_service_factory.h"
 #include "chrome/browser/download/download_util.h"
-#include "chrome/browser/extensions/extension_downloads_api_constants.h"
 #include "chrome/browser/extensions/extension_event_names.h"
 #include "chrome/browser/extensions/extension_event_router.h"
 #include "chrome/browser/icon_loader.h"
@@ -43,7 +43,7 @@
 
 using content::BrowserThread;
 
-namespace constants = extension_downloads_api_constants;
+namespace constants = download_extension_api_constants;
 
 bool DownloadsFunctionInterface::RunImplImpl(
     DownloadsFunctionInterface* pimpl) {