Implement the new Sync Confirmation dialog on Linux and Windows.

chrome/browser/chromeos/login/helper.cc

Index: chrome/browser/chromeos/login/helper.cc
diff --git a/chrome/browser/chromeos/login/helper.cc b/chrome/browser/chromeos/login/helper.cc
index 56a3f549a63647fc0ab5b784aab1b9d169d69fba..ce9743fba68a9d2439fbb6b0636034b3a24b228c 100644
--- a/chrome/browser/chromeos/login/helper.cc
+++ b/chrome/browser/chromeos/login/helper.cc
@@ -97,13 +97,13 @@ gfx::Rect CalculateScreenBounds(const gfx::Size& size) {
   return bounds;
 }
 
-int GetCurrentUserImageSize() {
+unsigned int GetCurrentUserImageSize() {
   // The biggest size that the profile picture is displayed at is currently
   // 220px, used for the big preview on OOBE and Change Picture options page.
-  static const int kBaseUserImageSize = 220;
+  static const unsigned int kBaseUserImageSize = 220;
   float scale_factor = gfx::Display::GetForcedDeviceScaleFactor();
   if (scale_factor > 1.0f)
-    return static_cast<int>(scale_factor * kBaseUserImageSize);
+    return static_cast<unsigned int>(scale_factor * kBaseUserImageSize);
   return kBaseUserImageSize * gfx::ImageSkia::GetMaxSupportedScale();
 }