[cros] Fix UI issues on SignIn pod.

chrome/browser/chromeos/login/login_screen.cc

Index: chrome/browser/chromeos/login/login_screen.cc
diff --git a/chrome/browser/chromeos/login/login_screen.cc b/chrome/browser/chromeos/login/login_screen.cc
index ed838b0feb2223c479222b6c1c52febfcbd6ea19..1f157751c00fca4b25913b7664ce0ea3cbb5eed4 100644
--- a/chrome/browser/chromeos/login/login_screen.cc
+++ b/chrome/browser/chromeos/login/login_screen.cc
@@ -27,10 +27,18 @@
 #include "grit/generated_resources.h"
 #include "grit/theme_resources.h"
 
+namespace {
+
+// Considering 10px shadow from each side.
+const int kLoginScreenWidth = 288;
+const int kLoginScreenHeight = 318;
+
+}  // anonymous namespace
+
 namespace chromeos {
 
 LoginScreen::LoginScreen(WizardScreenDelegate* delegate)
-    : ViewScreen<NewUserView>(delegate),
+    : ViewScreen<NewUserView>(delegate, kLoginScreenWidth, kLoginScreenHeight),
       bubble_(NULL),
       authenticator_(NULL) {
   if (CrosLibrary::Get()->EnsureLoaded()) {