Move PageTransition into content namespace. While I'm touching all these files, I've also updated...

content/common/resource_messages.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // IPC messages for resource loading.
 
 // Multiply-included message file, hence no include guard.
 #include "base/shared_memory.h"
-#include "content/common/page_transition_types.h"
+#include "content/common/common_param_traits.h"
 #include "content/common/resource_response.h"
 #include "ipc/ipc_message_macros.h"
 #include "net/base/upload_data.h"
 
 #define IPC_MESSAGE_START ResourceMsgStart
 #undef IPC_MESSAGE_EXPORT
 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
 
 IPC_STRUCT_TRAITS_BEGIN(webkit_glue::ResourceResponseInfo)
   IPC_STRUCT_TRAITS_MEMBER(request_time)
@@ skipping 76 matching lines @@
   // True if the request was user initiated.
   IPC_STRUCT_MEMBER(bool, has_user_gesture)
 
   // True if |frame_id| is the main frame of a RenderView.
   IPC_STRUCT_MEMBER(bool, is_main_frame)
 
   // Identifies the frame within the RenderView that sent the request.
   // -1 if unknown / invalid.
   IPC_STRUCT_MEMBER(int64, frame_id)
 
-  IPC_STRUCT_MEMBER(PageTransition::Type, transition_type)
+  IPC_STRUCT_MEMBER(content::PageTransition, transition_type)
 IPC_STRUCT_END()
 
 // Resource messages sent from the browser to the renderer.
 
 // Sent when the headers are available for a resource request.
 IPC_MESSAGE_ROUTED2(ResourceMsg_ReceivedResponse,
                     int /* request_id */,
                     ResourceResponseHead)
 
 // Sent when cached metadata from a resource request is ready.
@@ skipping 78 matching lines @@
                     int /* request_id */)
 
 // Sent by the renderer process to acknowledge receipt of a
 // UploadProgress message.
 IPC_MESSAGE_ROUTED1(ResourceHostMsg_UploadProgress_ACK,
                     int /* request_id */)
 
 // Sent when the renderer process deletes a resource loader.
 IPC_MESSAGE_CONTROL1(ResourceHostMsg_ReleaseDownloadedFile,
                      int /* request_id */)