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

content/public/renderer/navigation_state.cc

 // 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.
 
 #include "content/public/renderer/navigation_state.h"
 
 #include "webkit/glue/alt_error_page_resource_fetcher.h"
 #include "webkit/glue/password_form.h"
 
 namespace content {
 
 NavigationState::~NavigationState() {}
 
 void NavigationState::set_password_form_data(webkit_glue::PasswordForm* data) {
   password_form_data_.reset(data);
 }
 
 void NavigationState::set_alt_error_page_fetcher(
     webkit_glue::AltErrorPageResourceFetcher* f) {
   alt_error_page_fetcher_.reset(f);
 }
 
-NavigationState::NavigationState(PageTransition::Type transition_type,
+NavigationState::NavigationState(content::PageTransition transition_type,
                                  const base::Time& request_time,
                                  bool is_content_initiated,
                                  int32 pending_page_id,
                                  int pending_history_list_offset)
     : transition_type_(transition_type),
       load_type_(UNDEFINED_LOAD),
       request_time_(request_time),
       load_histograms_recorded_(false),
       web_timing_histograms_recorded_(false),
       request_committed_(false),
       is_content_initiated_(is_content_initiated),
       pending_page_id_(pending_page_id),
       pending_history_list_offset_(pending_history_list_offset),
       use_error_page_(false),
       cache_policy_override_set_(false),
       cache_policy_override_(WebKit::WebURLRequest::UseProtocolCachePolicy),
       http_status_code_(0),
       was_fetched_via_spdy_(false),
       was_npn_negotiated_(false),
       was_alternate_protocol_available_(false),
       was_fetched_via_proxy_(false),
       was_translated_(false),
       was_within_same_page_(false),
       was_prefetcher_(false),
       was_referred_by_prefetcher_(false) {
 }
 
 }  // namespace content