GTK: improve app mode .desktop file creation....

chrome/common/chrome_plugin_util.cc

Index: chrome/common/chrome_plugin_util.cc
===================================================================
--- chrome/common/chrome_plugin_util.cc	(revision 27632)
+++ chrome/common/chrome_plugin_util.cc	(working copy)
@@ -140,8 +140,13 @@
   // Use '--app=url' instead of just 'url' to launch the browser with minimal
   // chrome.
   // Note: Do not change this flag!  Old Gears shortcuts will break if you do!
-  std::wstring url_w = UTF8ToWide(url);
-  arguments_w += std::wstring(L"--") + switches::kApp + L'=' + url_w;
+  std::string url_string(url);
+  ReplaceSubstringsAfterOffset(&url_string, 0, "\"", "\\\"");
+  ReplaceSubstringsAfterOffset(&url_string, 0, "%", "%%");
+  ReplaceSubstringsAfterOffset(&url_string, 0, ";", "");
+  ReplaceSubstringsAfterOffset(&url_string, 0, "$", "");
+  std::wstring url_w = UTF8ToWide(url_string);
+  arguments_w += std::wstring(L"--") + switches::kApp + L"=\"" + url_w + L"\"";
 
   *arguments = WideToUTF8(arguments_w);