Enable device orientation by default.

chrome/browser/device_orientation/device_orientation_browsertest.cc

Index: chrome/browser/device_orientation/device_orientation_browsertest.cc
diff --git a/chrome/browser/device_orientation/device_orientation_browsertest.cc b/chrome/browser/device_orientation/device_orientation_browsertest.cc
index 332316e737d3b6b520d9ab235993ad52e319cc04..d33f5d3faee79830322a4467af830c43c984a4a3 100644
--- a/chrome/browser/device_orientation/device_orientation_browsertest.cc
+++ b/chrome/browser/device_orientation/device_orientation_browsertest.cc
@@ -38,7 +38,7 @@ class DeviceOrientationBrowserTest : public InProcessBrowserTest {
  public:
   // From InProcessBrowserTest.
   virtual void SetUpCommandLine(CommandLine* command_line) {
-    command_line->AppendSwitch(switches::kEnableDeviceOrientation);
+    EXPECT_TRUE(!command_line->HasSwitch(switches::kDisableDeviceOrientation));
   }
 
   GURL testUrl(const FilePath::CharType* filename) {