Add cross-platform API to get the form factor of the device

chrome/browser/sync/glue/device_info.cc

Index: chrome/browser/sync/glue/device_info.cc
diff --git a/chrome/browser/sync/glue/device_info.cc b/chrome/browser/sync/glue/device_info.cc
index 04836c49ac24ad785011485b5b890b7157f54ab2..fc11f0438e9009fb6cae4d8f945112deaaf017e1 100644
--- a/chrome/browser/sync/glue/device_info.cc
+++ b/chrome/browser/sync/glue/device_info.cc
@@ -12,13 +12,17 @@
 #include "content/public/browser/browser_thread.h"
 #include "sync/util/get_session_name.h"
 
+#if defined(OS_ANDROID)

[Alexei Svitkine (slow), 2013/10/31 14:52:32]

No need for the ifdef here, just add this include together with the rest. (Even
if the function is only used for android, the include won't be an issue for
other platforms).

[yao, 2013/11/01 14:37:59]

Done.

+#include "chrome/common/device_form_factor.h"
+#endif
+
 namespace browser_sync {
 
 namespace {
 
 #if defined(OS_ANDROID)
 bool IsTabletUI() {
-  return CommandLine::ForCurrentProcess()->HasSwitch(switches::kTabletUI);
+  return GetDeviceFormFactor() == DEVICE_FORM_FACTOR_TABLET;
 }
 #endif