linux: unify all the dialog layout code for visual consistency.

chrome/browser/browser_main.cc

Index: chrome/browser/browser_main.cc
diff --git a/chrome/browser/browser_main.cc b/chrome/browser/browser_main.cc
index c357c6e7a0e348f940cf4f40c228945b0f6d0d50..aedc95d7d7eedea0669b97afcf9416047fa13349 100644
--- a/chrome/browser/browser_main.cc
+++ b/chrome/browser/browser_main.cc
@@ -104,6 +104,10 @@
 
 #endif  // defined(OS_WIN)
 
+#if defined(TOOLKIT_GTK)
+#include "chrome/common/gtk_util.h"
+#endif
+
 namespace Platform {
 
 void WillInitializeMainMessageLoop(const CommandLine & command_line);
@@ -553,6 +557,9 @@ int BrowserMain(const MainFunctionParams& parameters) {
   // the installation event.
   RLZTracker::InitRlzDelayed(base::DIR_MODULE, is_first_run);
 #endif
+#if defined(TOOLKIT_GTK)
+  gtk_util::InitRCStyles();
+#endif
 
   // Config the network module so it has access to resources.
   net::NetModule::SetResourceProvider(NetResourceProvider);