Allow drag-and-drop of zipped extensions on chrome://extensions

chrome/utility/extensions/extensions_handler.cc

Index: chrome/utility/extensions/extensions_handler.cc
diff --git a/chrome/utility/extensions/extensions_handler.cc b/chrome/utility/extensions/extensions_handler.cc
index 0786b9ec380c91374899e859775c5811116590fe..512af35977a336adf2a6e4fbf8d2e94acc4ae269 100644
--- a/chrome/utility/extensions/extensions_handler.cc
+++ b/chrome/utility/extensions/extensions_handler.cc
@@ -5,6 +5,7 @@
 #include "chrome/utility/extensions/extensions_handler.h"
 
 #include "base/command_line.h"
+#include "base/file_util.h"
 #include "base/path_service.h"
 #include "chrome/common/chrome_utility_messages.h"
 #include "chrome/common/extensions/chrome_extensions_client.h"
@@ -21,6 +22,7 @@
 #include "extensions/common/manifest.h"
 #include "media/base/media.h"
 #include "media/base/media_file_checker.h"
+#include "third_party/zlib/google/zip.h"
 #include "ui/base/ui_base_switches.h"
 
 #if defined(OS_WIN)
@@ -52,6 +54,11 @@ void ReleaseProcessIfNeeded() {
   content::UtilityThread::Get()->ReleaseProcessIfNeeded();
 }
 
+const char kExtensionHandlerTempDirError[] =
+    "Could not create temporary directory for zipped extension.";
+const char kExtensionHandlerUnzipError[] =
+    "Could not unzip extension for install.";
+
 }  // namespace
 
 ExtensionsHandler::ExtensionsHandler() {}
@@ -81,6 +88,7 @@ bool ExtensionsHandler::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(ExtensionsHandler, message)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_UnpackExtension, OnUnpackExtension)
+    IPC_MESSAGE_HANDLER(ChromeUtilityMsg_UnzipToDir, OnUnzipToDir)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_ParseUpdateManifest,
                         OnParseUpdateManifest)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_DecodeImageBase64, OnDecodeImageBase64)
@@ -139,6 +147,26 @@ void ExtensionsHandler::OnUnpackExtension(
   ReleaseProcessIfNeeded();
 }
 
+void ExtensionsHandler::OnUnzipToDir(const base::FilePath& zip_path,
+                                     const base::FilePath& dir) {
+  base::FilePath temp_path;
+  if (!base::CreateTemporaryDirInDir(
+          dir,
+          zip_path.RemoveExtension().BaseName().value() +
+              FILE_PATH_LITERAL("_"),
+          &temp_path)) {
+    Send(new ChromeUtilityHostMsg_UnzipToDir_Failed(
+        std::string(kExtensionHandlerTempDirError)));
+    return;
+  }
+  if (!zip::Unzip(zip_path, temp_path)) {
+    Send(new ChromeUtilityHostMsg_UnzipToDir_Failed(
+        std::string(kExtensionHandlerUnzipError)));
+    return;
+  }
+  Send(new ChromeUtilityHostMsg_UnzipToDir_Succeeded(temp_path));
+}
+
 void ExtensionsHandler::OnParseUpdateManifest(const std::string& xml) {
   UpdateManifest manifest;
   if (!manifest.Parse(xml)) {