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

This is a continuation of r55259, where we convert the remaining IPC messages
to the new system. At this point, all the messages should be able to accept
forward declared classes/structs as parameters.

BUG=51411
TEST=none

Review URL: http://codereview.chromium.org/3018045

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@55735 0039d316-1c4b-4281-b951-d872f2087c98

5 files changed, 222 insertions, 149 deletions

diff --git a/chrome/common/render_messages.cc b/chrome/common/render_messages.cc
index 68aa81d..04a258c 100644
--- a/chrome/common/render_messages.cc
+++ b/chrome/common/render_messages.cc
@@ -5,8 +5,71 @@
 #include "chrome/common/render_messages.h"
 
 #include "chrome/common/thumbnail_score.h"
+#include "third_party/WebKit/WebKit/chromium/public/WebCompositionUnderline.h"
+#include "third_party/WebKit/WebKit/chromium/public/WebFindOptions.h"
+#include "third_party/WebKit/WebKit/chromium/public/WebScreenInfo.h"
+#include "webkit/glue/webaccessibility.h"
 #include "webkit/glue/webcursor.h"
 
 #define MESSAGES_INTERNAL_IMPL_FILE \
   "chrome/common/render_messages_internal.h"
 #include "ipc/ipc_message_impl_macros.h"
+
+namespace IPC {
+
+void ParamTraits<webkit_glue::WebAccessibility>::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);
+}
+
+bool ParamTraits<webkit_glue::WebAccessibility>::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;
+}
+
+void ParamTraits<webkit_glue::WebAccessibility>::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")");
+}
+
+}  // namespace IPC
diff --git a/chrome/common/render_messages.h b/chrome/common/render_messages.h
index e45d79d..8dc63a9 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
@@ -3322,55 +3325,9 @@ 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);
 };
 
 // Traits for ViewMsg_DeviceOrientationUpdated_Params
diff --git a/chrome/common/render_messages_unittest.cc b/chrome/common/render_messages_unittest.cc
index ccfc898..4fc0aab 100644
--- a/chrome/common/render_messages_unittest.cc
+++ b/chrome/common/render_messages_unittest.cc
@@ -7,6 +7,8 @@
 #include "base/utf_string_conversions.h"
 #include "chrome/common/render_messages.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "webkit/glue/webaccessibility.h"
+#include "third_party/WebKit/WebKit/chromium/public/WebRect.h"
 
 TEST(RenderMessagesUnittest, WebAccessibility) {
   // Test a simple case.
diff --git a/chrome/common/webkit_param_traits.cc b/chrome/common/webkit_param_traits.cc
new file mode 100644
index 0000000..06ee1e2
--- /dev/null
+++ b/chrome/common/webkit_param_traits.cc
@@ -0,0 +1,131 @@
+// Copyright (c) 2010 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 "chrome/common/webkit_param_traits.h"
+
+#include "third_party/WebKit/WebKit/chromium/public/WebCompositionUnderline.h"
+#include "third_party/WebKit/WebKit/chromium/public/WebFindOptions.h"
+#include "third_party/WebKit/WebKit/chromium/public/WebScreenInfo.h"
+
+namespace IPC {
+
+void ParamTraits<WebKit::WebRect>::Write(Message* m, const param_type& p) {
+    WriteParam(m, p.x);
+    WriteParam(m, p.y);
+    WriteParam(m, p.width);
+    WriteParam(m, p.height);
+  }
+
+bool ParamTraits<WebKit::WebRect>::Read(const Message* m, void** iter,
+                                        param_type* p) {
+  return
+      ReadParam(m, iter, &p->x) &&
+      ReadParam(m, iter, &p->y) &&
+      ReadParam(m, iter, &p->width) &&
+      ReadParam(m, iter, &p->height);
+}
+
+void ParamTraits<WebKit::WebRect>::Log(const param_type& p, std::wstring* l) {
+  l->append(L"(");
+  LogParam(p.x, l);
+  l->append(L", ");
+  LogParam(p.y, l);
+  l->append(L", ");
+  LogParam(p.width, l);
+  l->append(L", ");
+  LogParam(p.height, l);
+  l->append(L")");
+}
+
+void ParamTraits<WebKit::WebScreenInfo>::Write(Message* m, const param_type& p) {
+  WriteParam(m, p.depth);
+  WriteParam(m, p.depthPerComponent);
+  WriteParam(m, p.isMonochrome);
+  WriteParam(m, p.rect);
+  WriteParam(m, p.availableRect);
+}
+
+bool ParamTraits<WebKit::WebScreenInfo>::Read(const Message* m, void** iter,
+                                              param_type* p) {
+  return
+      ReadParam(m, iter, &p->depth) &&
+      ReadParam(m, iter, &p->depthPerComponent) &&
+      ReadParam(m, iter, &p->isMonochrome) &&
+      ReadParam(m, iter, &p->rect) &&
+      ReadParam(m, iter, &p->availableRect);
+}
+
+void ParamTraits<WebKit::WebScreenInfo>::Log(const param_type& p,
+                                             std::wstring* l) {
+  l->append(L"(");
+  LogParam(p.depth, l);
+  l->append(L", ");
+  LogParam(p.depthPerComponent, l);
+  l->append(L", ");
+  LogParam(p.isMonochrome, l);
+  l->append(L", ");
+  LogParam(p.rect, l);
+  l->append(L", ");
+  LogParam(p.availableRect, l);
+  l->append(L")");
+}
+
+void ParamTraits<WebKit::WebFindOptions>::Write(Message* m,
+                                                const param_type& p) {
+  WriteParam(m, p.forward);
+  WriteParam(m, p.matchCase);
+  WriteParam(m, p.findNext);
+}
+
+bool ParamTraits<WebKit::WebFindOptions>::Read(const Message* m, void** iter,
+                                               param_type* p) {
+  return
+      ReadParam(m, iter, &p->forward) &&
+      ReadParam(m, iter, &p->matchCase) &&
+      ReadParam(m, iter, &p->findNext);
+}
+
+void ParamTraits<WebKit::WebFindOptions>::Log(const param_type& p,
+                                              std::wstring* l) {
+  l->append(L"(");
+  LogParam(p.forward, l);
+  l->append(L", ");
+  LogParam(p.matchCase, l);
+  l->append(L", ");
+  LogParam(p.findNext, l);
+  l->append(L")");
+}
+
+void ParamTraits<WebKit::WebCompositionUnderline>::Write(Message* m,
+                                                         const param_type& p) {
+  WriteParam(m, p.startOffset);
+  WriteParam(m, p.endOffset);
+  WriteParam(m, p.color);
+  WriteParam(m, p.thick);
+}
+
+bool ParamTraits<WebKit::WebCompositionUnderline>::Read(
+    const Message* m, void** iter,
+    param_type* p) {
+  return
+      ReadParam(m, iter, &p->startOffset) &&
+      ReadParam(m, iter, &p->endOffset) &&
+      ReadParam(m, iter, &p->color) &&
+      ReadParam(m, iter, &p->thick);
+}
+
+void ParamTraits<WebKit::WebCompositionUnderline>::Log(const param_type& p,
+                                                       std::wstring* l) {
+  l->append(L"(");
+  LogParam(p.startOffset, l);
+  l->append(L",");
+  LogParam(p.endOffset, l);
+  l->append(L":");
+  LogParam(p.color, l);
+  l->append(L":");
+  LogParam(p.thick, l);
+  l->append(L")");
+}
+
+}  // namespace IPC
diff --git a/chrome/common/webkit_param_traits.h b/chrome/common/webkit_param_traits.h
index 748c26b..4b0433a 100644
--- a/chrome/common/webkit_param_traits.h
+++ b/chrome/common/webkit_param_traits.h
@@ -26,80 +26,38 @@
 
 #include "ipc/ipc_message_utils.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebCache.h"
-#include "third_party/WebKit/WebKit/chromium/public/WebCompositionUnderline.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebConsoleMessage.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebContextMenuData.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebDragOperation.h"
-#include "third_party/WebKit/WebKit/chromium/public/WebFindOptions.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebInputEvent.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebMediaPlayerAction.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebPopupType.h"
-#include "third_party/WebKit/WebKit/chromium/public/WebScreenInfo.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebTextDirection.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebTextInputType.h"
 
+namespace WebKit {
+struct WebCompositionUnderline;
+struct WebFindOptions;
+struct WebRect;
+struct WebScreenInfo;
+}
+
 namespace IPC {
 
 template <>
 struct ParamTraits<WebKit::WebRect> {
   typedef WebKit::WebRect param_type;
-  static void Write(Message* m, const param_type& p) {
-    WriteParam(m, p.x);
-    WriteParam(m, p.y);
-    WriteParam(m, p.width);
-    WriteParam(m, p.height);
-  }
-  static bool Read(const Message* m, void** iter, param_type* p) {
-    return
-      ReadParam(m, iter, &p->x) &&
-      ReadParam(m, iter, &p->y) &&
-      ReadParam(m, iter, &p->width) &&
-      ReadParam(m, iter, &p->height);
-  }
-  static void Log(const param_type& p, std::wstring* l) {
-    l->append(L"(");
-    LogParam(p.x, l);
-    l->append(L", ");
-    LogParam(p.y, l);
-    l->append(L", ");
-    LogParam(p.width, l);
-    l->append(L", ");
-    LogParam(p.height, 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);
 };
 
 template <>
 struct ParamTraits<WebKit::WebScreenInfo> {
   typedef WebKit::WebScreenInfo param_type;
-  static void Write(Message* m, const param_type& p) {
-    WriteParam(m, p.depth);
-    WriteParam(m, p.depthPerComponent);
-    WriteParam(m, p.isMonochrome);
-    WriteParam(m, p.rect);
-    WriteParam(m, p.availableRect);
-  }
-  static bool Read(const Message* m, void** iter, param_type* p) {
-    return
-      ReadParam(m, iter, &p->depth) &&
-      ReadParam(m, iter, &p->depthPerComponent) &&
-      ReadParam(m, iter, &p->isMonochrome) &&
-      ReadParam(m, iter, &p->rect) &&
-      ReadParam(m, iter, &p->availableRect);
-  }
-  static void Log(const param_type& p, std::wstring* l) {
-    l->append(L"(");
-    LogParam(p.depth, l);
-    l->append(L", ");
-    LogParam(p.depthPerComponent, l);
-    l->append(L", ");
-    LogParam(p.isMonochrome, l);
-    l->append(L", ");
-    LogParam(p.rect, l);
-    l->append(L", ");
-    LogParam(p.availableRect, 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);
 };
 
 template <>
@@ -141,26 +99,9 @@ struct ParamTraits<WebKit::WebPopupType> {
 template <>
 struct ParamTraits<WebKit::WebFindOptions> {
   typedef WebKit::WebFindOptions param_type;
-  static void Write(Message* m, const param_type& p) {
-    WriteParam(m, p.forward);
-    WriteParam(m, p.matchCase);
-    WriteParam(m, p.findNext);
-  }
-  static bool Read(const Message* m, void** iter, param_type* p) {
-    return
-      ReadParam(m, iter, &p->forward) &&
-      ReadParam(m, iter, &p->matchCase) &&
-      ReadParam(m, iter, &p->findNext);
-  }
-  static void Log(const param_type& p, std::wstring* l) {
-    l->append(L"(");
-    LogParam(p.forward, l);
-    l->append(L", ");
-    LogParam(p.matchCase, l);
-    l->append(L", ");
-    LogParam(p.findNext, 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);
 };
 
 template <>
@@ -378,30 +319,9 @@ template <>
 template <>
 struct ParamTraits<WebKit::WebCompositionUnderline> {
   typedef WebKit::WebCompositionUnderline param_type;
-  static void Write(Message* m, const param_type& p) {
-    WriteParam(m, p.startOffset);
-    WriteParam(m, p.endOffset);
-    WriteParam(m, p.color);
-    WriteParam(m, p.thick);
-  }
-  static bool Read(const Message* m, void** iter, param_type* p) {
-    return
-        ReadParam(m, iter, &p->startOffset) &&
-        ReadParam(m, iter, &p->endOffset) &&
-        ReadParam(m, iter, &p->color) &&
-        ReadParam(m, iter, &p->thick);
-  }
-  static void Log(const param_type& p, std::wstring* l) {
-    l->append(L"(");
-    LogParam(p.startOffset, l);
-    l->append(L",");
-    LogParam(p.endOffset, l);
-    l->append(L":");
-    LogParam(p.color, l);
-    l->append(L":");
-    LogParam(p.thick, 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);
 };
 
 template <>