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

content/common/view_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 page rendering.
 // Multiply-included message file, hence no include guard.
 
 #include "base/process.h"
 #include "base/shared_memory.h"
 #include "content/common/common_param_traits.h"
 #include "content/common/content_export.h"
 #include "content/common/css_colors.h"
 #include "content/common/edit_command.h"
 #include "content/common/navigation_gesture.h"
-#include "content/common/page_transition_types.h"
 #include "content/common/page_zoom.h"
 #include "content/common/renderer_preferences.h"
 #include "content/common/view_message_enums.h"
 #include "content/common/webkit_param_traits.h"
 #include "content/common/window_container_type.h"
 #include "ipc/ipc_channel_handle.h"
 #include "ipc/ipc_message_macros.h"
 #include "ipc/ipc_platform_file.h"
 #include "media/base/media_log_event.h"
 #include "net/base/host_port_pair.h"
@@ skipping 357 matching lines @@
   IPC_STRUCT_MEMBER(int64, frame_id)
 
   // URL of the page being loaded.
   IPC_STRUCT_MEMBER(GURL, url)
 
   // URL of the referrer of this load. WebKit generates this based on the
   // source of the event that caused the load.
   IPC_STRUCT_MEMBER(GURL, referrer)
 
   // The type of transition.
-  IPC_STRUCT_MEMBER(PageTransition::Type, transition)
+  IPC_STRUCT_MEMBER(content::PageTransition, transition)
 
   // Lists the redirects that occurred on the way to the current page. This
   // vector has the same format as reported by the WebDataSource in the glue,
   // with the current page being the last one in the list (so even when
   // there's no redirect, there will be one entry in the list.
   IPC_STRUCT_MEMBER(std::vector<GURL>, redirects)
 
   // Set to false if we want to update the session history but not update
   // the browser history.  E.g., on unreachable urls.
   IPC_STRUCT_MEMBER(bool, should_update_history)
@@ skipping 206 matching lines @@
 
   // The URL to load.
   IPC_STRUCT_MEMBER(GURL, url)
 
   // The URL to send in the "Referer" header field. Can be empty if there is
   // no referrer.
   // TODO: consider folding this into extra_headers.
   IPC_STRUCT_MEMBER(GURL, referrer)
 
   // The type of transition.
-  IPC_STRUCT_MEMBER(PageTransition::Type, transition)
+  IPC_STRUCT_MEMBER(content::PageTransition, transition)
 
   // Opaque history state (received by ViewHostMsg_UpdateState).
   IPC_STRUCT_MEMBER(std::string, state)
 
   // Type of navigation.
   IPC_STRUCT_MEMBER(ViewMsg_Navigate_Type::Value, navigation_type)
 
   // The time the request was created
   IPC_STRUCT_MEMBER(base::Time, request_time)
 
@@ skipping 1316 matching lines @@
                      media::MediaLogEvent /* event */)
 
 // Requests to lock the mouse. Will result in a ViewMsg_LockMouse_ACK message
 // being sent back.
 IPC_MESSAGE_ROUTED0(ViewHostMsg_LockMouse)
 
 // Requests to unlock the mouse. A ViewMsg_MouseLockLost message will be sent
 // whenever the mouse is unlocked (which may or may not be caused by
 // ViewHostMsg_UnlockMouse).
 IPC_MESSAGE_ROUTED0(ViewHostMsg_UnlockMouse)