Minimal Chrome Frame with Aura.

chrome/common/automation_messages_internal.h

Index: chrome/common/automation_messages_internal.h
diff --git a/chrome/common/automation_messages_internal.h b/chrome/common/automation_messages_internal.h
index 00167ee71e81f07a3ce76953edaacd0c74eb7767..a9ee3dc7cfe5405c4f25252ef06cdb013cba9695 100644
--- a/chrome/common/automation_messages_internal.h
+++ b/chrome/common/automation_messages_internal.h
@@ -251,18 +251,18 @@ IPC_MESSAGE_CONTROL3(AutomationMsg_DEPRECATED_WindowKeyPress,
                      int,
                      int,
                      int)
-
+#if defined(OS_WIN)
 // This message notifies the AutomationProvider to create a tab which is
 // hosted by an external process.
 // Request:
 //   ExternalTabSettings - settings for external tab
 IPC_SYNC_MESSAGE_CONTROL1_4(AutomationMsg_CreateExternalTab,
                             ExternalTabSettings  /* settings*/,
-                            gfx::NativeWindow  /* Tab container window */,
-                            gfx::NativeWindow  /* Tab window */,
+                            HWND  /* Tab container window */,
+                            HWND  /* Tab window */,
                             int  /* Handle to the new tab */,
                             int  /* Session Id of the new tab */)
-
+#endif  // defined(OS_WIN)
 // This message notifies the AutomationProvider to navigate to a specified
 // url in the external tab with given handle. The first parameter is the
 // handle to the tab resource. The second parameter is the target url.
@@ -557,7 +557,7 @@ IPC_MESSAGE_ROUTED2(AutomationMsg_NavigationFailed,
                     int,
                     GURL)
 
-#if defined(OS_WIN) && !defined(USE_AURA)
+#if defined(OS_WIN)
 // This message is an outgoing message from an automation client to Chrome.
 // It is used to reposition a chrome tab window.
 IPC_MESSAGE_CONTROL2(AutomationMsg_TabReposition,
@@ -717,17 +717,17 @@ IPC_SYNC_MESSAGE_CONTROL2_1(
 
 IPC_MESSAGE_ROUTED1(AutomationMsg_AttachExternalTab,
                     AttachExternalTabParams)
-
+#if defined(OS_WIN)
 // Sent when the automation client connects to an existing tab.
 IPC_SYNC_MESSAGE_CONTROL3_4(AutomationMsg_ConnectExternalTab,
                             uint64 /* cookie */,
                             bool   /* allow/block tab*/,
-                            gfx::NativeWindow  /* parent window */,
-                            gfx::NativeWindow  /* Tab container window */,
-                            gfx::NativeWindow  /* Tab window */,
+                            HWND  /* parent window */,
+                            HWND  /* Tab container window */,
+                            HWND  /* Tab window */,
                             int  /* Handle to the new tab */,
                             int  /* Session Id of the new tab */)
-
+#endif  // defined(OS_WIN)
 // Simulate an end of session. Normally this happens when the user
 // shuts down the machine or logs off.
 // Request: