Revert 202188 "Introduce content::PageState."

This change bloated npchrome_frame.dll (see
http://build.chromium.org/f/chromium/perf/xp-release/sizes/report.html?=undefined&history=3&rev=202214&graph=npchrome_frame.dll)
because content_common.lib's common_param_traits.obj depends on
content_common.lib's page_state.obj which, in turn, depends on
webkit. This means that consumers of IPC messages in content_common
suddenly require all of webkit.

> Introduce content::PageState.
> 
> This is a concrete class wrapping a string that contains the
> data of a serialized WebKit::WebHistoryItem class.  Previously,
> we've just passed around these as strings, giving them names
> like "state", "content_state" or "history_state".  It has been
> hard to identify all of the places in the code where these
> strings get passed around.  A concrete class should make usage
> more apparent.  Plus, instead of manipulating the strings using
> methods from webkit/glue/glue_serialize.h, we can just declare
> methods on the PageState class.  This makes the code much cleaner.
> 
> This first pass just implements PageState in terms of glue_serialize.
> It also adds content/public/renderer/history_item_serialization.h
> as the home for PageState to WebKit::WebHistoryItem conversion,
> which should ideally only be usable from the renderer process.
> (This bit is a step toward resolving bug 237243.)
> 
> page_state.h declares operator==() to support DCHECK_EQ, which
> seems consistent with the idea of PageState being a replacement
> for std::string.  I didn't want to litter tests with calls to
> PageState::ToEncodedData().  That would get cumbersome.
> 
> BUG=240426
> R=brettw@chromium.org, tsepez@chromium.org
> 
> Review URL: https://codereview.chromium.org/14985014

TBR=darin@chromium.org

Review URL: https://codereview.chromium.org/16068002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@202321 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 2 insertions, 3 deletions

diff --git a/components/sessions/serialized_navigation_entry_test_helper.h b/components/sessions/serialized_navigation_entry_test_helper.h
index a653f22..43b49eb 100644
--- a/components/sessions/serialized_navigation_entry_test_helper.h
+++ b/components/sessions/serialized_navigation_entry_test_helper.h
@@ -17,7 +17,6 @@ class Time;
 }
 
 namespace content {
-class PageState;
 struct Referrer;
 }
 
@@ -39,8 +38,8 @@ class SerializedNavigationEntryTestHelper {
       const std::string& virtual_url,
       const std::string& title);
 
-  static void SetPageState(const content::PageState& page_state,
-                           SerializedNavigationEntry* navigation);
+  static void SetContentState(const std::string& content_state,
+                              SerializedNavigationEntry* navigation);
 
   static void SetHasPostData(bool has_post_data,
                              SerializedNavigationEntry* navigation);