| Index: content/common/screen_orientation_messages.h
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| diff --git a/content/common/screen_orientation_messages.h b/content/common/screen_orientation_messages.h
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| index cd8a4b7bb5d50159ad9a2b9dece905ce13e0c64a..6a8f4a89427a49da3525a7721e0fcb984efa86e9 100644
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| --- a/content/common/screen_orientation_messages.h
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| +++ b/content/common/screen_orientation_messages.h
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| @@ -5,6 +5,7 @@
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|  // IPC messages for screen orientation.
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|  // Multiply-included message file, hence no include guard.
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|  
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| +#include "content/common/content_export.h"
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|  #include "ipc/ipc_message_macros.h"
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|  #include "third_party/WebKit/public/platform/WebScreenOrientation.h"
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|  
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| @@ -19,3 +20,12 @@ IPC_ENUM_TRAITS(blink::WebScreenOrientation)
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|  // has changed. |orientation| contains the new screen orientation in degrees.
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|  IPC_MESSAGE_CONTROL1(ScreenOrientationMsg_OrientationChange,
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|                       blink::WebScreenOrientation /* orientation */ )
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| +
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| +// The renderer process requests the browser process to lock the screen
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| +// orientation to the specified |orientations|.
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| +IPC_MESSAGE_CONTROL1(ScreenOrientationHostMsg_Lock,
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| +                     blink::WebScreenOrientations /* orientations */ )
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| +
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| +// The renderer process requests the browser process to unlock the screen
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| +// orientation.
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| +IPC_MESSAGE_CONTROL0(ScreenOrientationHostMsg_Unlock)
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| 
 |