FBTF: Allow forward declaration of classes passed to sync IPC messages.

chrome/common/render_messages.h

Index: chrome/common/render_messages.h
diff --git a/chrome/common/render_messages.h b/chrome/common/render_messages.h
index 02790e5b0865596868e92b0db667d21e76fdb5c7..7d03aad6a396700ce78e9aa7f6bb34570ab33371 100644
--- a/chrome/common/render_messages.h
+++ b/chrome/common/render_messages.h
@@ -52,7 +52,6 @@
 #include "webkit/glue/plugins/webplugin.h"
 #include "webkit/glue/plugins/webplugininfo.h"
 #include "webkit/glue/resource_loader_bridge.h"
-#include "webkit/glue/webaccessibility.h"
 #include "webkit/glue/webcookie.h"
 #include "webkit/glue/webdropdata.h"
 #include "webkit/glue/webmenuitem.h"
@@ -62,6 +61,10 @@ namespace base {
 class Time;
 }
 
+namespace webkit_glue {
+struct WebAccessibility;
+}
+
 class SkBitmap;
 
 // Parameters structure for ViewMsg_Navigate, which has too many data
@@ -3258,55 +3261,9 @@ struct ParamTraits<WindowContainerType> {
 template <>
 struct ParamTraits<webkit_glue::WebAccessibility> {
   typedef webkit_glue::WebAccessibility param_type;
-  static void Write(Message* m, const param_type& p) {
-    WriteParam(m, p.id);
-    WriteParam(m, p.name);
-    WriteParam(m, p.value);
-    WriteParam(m, static_cast<int>(p.role));
-    WriteParam(m, static_cast<int>(p.state));
-    WriteParam(m, p.location);
-    WriteParam(m, p.attributes);
-    WriteParam(m, p.children);
-  }
-  static bool Read(const Message* m, void** iter, param_type* p) {
-    bool ret = ReadParam(m, iter, &p->id);
-    ret = ret && ReadParam(m, iter, &p->name);
-    ret = ret && ReadParam(m, iter, &p->value);
-    int role = -1;
-    ret = ret && ReadParam(m, iter, &role);
-    if (role >= webkit_glue::WebAccessibility::ROLE_NONE &&
-      role < webkit_glue::WebAccessibility::NUM_ROLES) {
-      p->role = static_cast<webkit_glue::WebAccessibility::Role>(role);
-    } else {
-      p->role = webkit_glue::WebAccessibility::ROLE_NONE;
-    }
-    int state = 0;
-    ret = ret && ReadParam(m, iter, &state);
-    p->state = static_cast<webkit_glue::WebAccessibility::State>(state);
-    ret = ret && ReadParam(m, iter, &p->location);
-    ret = ret && ReadParam(m, iter, &p->attributes);
-    ret = ret && ReadParam(m, iter, &p->children);
-    return ret;
-  }
-  static void Log(const param_type& p, std::wstring* l) {
-    l->append(L"(");
-    LogParam(p.id, l);
-    l->append(L", ");
-    LogParam(p.name, l);
-    l->append(L", ");
-    LogParam(p.value, l);
-    l->append(L", ");
-    LogParam(static_cast<int>(p.role), l);
-    l->append(L", ");
-    LogParam(static_cast<int>(p.state), l);
-    l->append(L", ");
-    LogParam(p.location, l);
-    l->append(L", ");
-    LogParam(p.attributes, l);
-    l->append(L", ");
-    LogParam(p.children, l);
-    l->append(L")");
-  }
+  static void Write(Message* m, const param_type& p);
+  static bool Read(const Message* m, void** iter, param_type* p);
+  static void Log(const param_type& p, std::wstring* l);
 };
 
 }  // namespace IPC