Split AXContentTreeData and AXContentTreeUpdate to separate files

Currently, AXContentTreeData and AXContentTreeUpdate are defined in
the same source files than AXContentNodeData (ax_content_node_data.h),
which makes it a bit unconvenient now that we are in the process of
removing all these classes, in favour of those from //ui/accessibility.

While technically this is not a requirement for the process, it would
be convenient to have each definition on separate places so that we
can work in a more iterative way towards removing those three classes,
so this CL puts AXContentTreeData in ax_content_tree_data.{h|cc} and
AXContentTreeupdate in ax_content_tree_update.h, in preparation for
the removal of ax_content_node_data.h, which will be the first step.

Bug: 1094150
Change-Id: Ied779d527fdff7dddeac896084872f4c15b31683
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2250603
Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Commit-Queue: Mario Sanchez Prada <mario@igalia.com>
Cr-Commit-Position: refs/heads/master@{#780243}

content/browser/frame_host/render_frame_host_impl.h

@@ -45,6 +45,7 @@
 #include "content/browser/site_instance_impl.h"
 #include "content/browser/webui/web_ui_impl.h"
 #include "content/common/ax_content_node_data.h"
+#include "content/common/ax_content_tree_update.h"
 #include "content/common/buildflags.h"
 #include "content/common/content_export.h"
 #include "content/common/dom_automation_controller.mojom.h"

content/common/BUILD.gn

@@ -57,6 +57,9 @@ source_set("common") {
     "appcache_interfaces.h",
     "ax_content_node_data.cc",
     "ax_content_node_data.h",
+    "ax_content_tree_data.cc",
+    "ax_content_tree_data.h",
+    "ax_content_tree_update.h",
     "ax_serialization_utils.cc",
     "ax_serialization_utils.h",
     "background_fetch/background_fetch_types.cc",

content/common/ax_content_node_data.cc

@@ -25,15 +25,4 @@ std::string AXContentNodeData::ToString() const {
   return result;
 }
 
-std::string AXContentTreeData::ToString() const {
-  std::string result = AXTreeData::ToString();
-
-  if (routing_id != MSG_ROUTING_NONE)
-    result += " routing_id=" + NumberToString(routing_id);
-  if (parent_routing_id != MSG_ROUTING_NONE)
-    result += " parent_routing_id=" + NumberToString(parent_routing_id);
-
-  return result;
-}
-
 }  // namespace ui

content/common/ax_content_node_data.h

@@ -10,8 +10,6 @@
 #include "content/common/content_export.h"
 #include "ipc/ipc_message.h"
 #include "ui/accessibility/ax_node_data.h"
-#include "ui/accessibility/ax_tree_data.h"
-#include "ui/accessibility/ax_tree_update.h"
 
 namespace content {
 
@@ -30,25 +28,6 @@ struct CONTENT_EXPORT AXContentNodeData : public ui::AXNodeData {
   int32_t child_routing_id = MSG_ROUTING_NONE;
 };
 
-// A subclass of AXTreeData that contains extra fields for
-// content-layer-specific AX attributes.
-struct CONTENT_EXPORT AXContentTreeData : public ui::AXTreeData {
-  AXContentTreeData() = default;
-  ~AXContentTreeData() override = default;
-
-  // Return a string representation of this data, for debugging.
-  std::string ToString() const override;
-
-  // The routing ID of this frame.
-  int routing_id = MSG_ROUTING_NONE;
-
-  // The routing ID of the parent frame.
-  int parent_routing_id = MSG_ROUTING_NONE;
-};
-
-typedef ui::AXTreeUpdateBase<content::AXContentNodeData,
-                             content::AXContentTreeData> AXContentTreeUpdate;
-
 }  // namespace content
 
 #endif  // CONTENT_COMMON_AX_CONTENT_NODE_DATA_H_

content/common/ax_content_tree_data.cc

@@ -0,0 +1,24 @@
+// Copyright 2020 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/common/ax_content_tree_data.h"
+
+#include "base/strings/string_number_conversions.h"
+
+using base::NumberToString;
+
+namespace content {
+
+std::string AXContentTreeData::ToString() const {
+  std::string result = AXTreeData::ToString();
+
+  if (routing_id != MSG_ROUTING_NONE)
+    result += " routing_id=" + NumberToString(routing_id);
+  if (parent_routing_id != MSG_ROUTING_NONE)
+    result += " parent_routing_id=" + NumberToString(parent_routing_id);
+
+  return result;
+}
+
+}  // namespace content

content/common/ax_content_tree_data.h

@@ -0,0 +1,34 @@
+// Copyright 2020 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.
+
+#ifndef CONTENT_COMMON_AX_CONTENT_TREE_DATA_H_
+#define CONTENT_COMMON_AX_CONTENT_TREE_DATA_H_
+
+#include <stdint.h>
+
+#include "content/common/content_export.h"
+#include "ipc/ipc_message.h"
+#include "ui/accessibility/ax_tree_data.h"
+
+namespace content {
+
+// A subclass of AXTreeData that contains extra fields for
+// content-layer-specific AX attributes.
+struct CONTENT_EXPORT AXContentTreeData : public ui::AXTreeData {
+  AXContentTreeData() = default;
+  ~AXContentTreeData() override = default;
+
+  // Return a string representation of this data, for debugging.
+  std::string ToString() const override;
+
+  // The routing ID of this frame.
+  int routing_id = MSG_ROUTING_NONE;
+
+  // The routing ID of the parent frame.
+  int parent_routing_id = MSG_ROUTING_NONE;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_AX_CONTENT_TREE_DATA_H_

content/common/ax_content_tree_data_mojom_traits.h

@@ -5,7 +5,7 @@
 #ifndef CONTENT_COMMON_AX_CONTENT_TREE_DATA_MOJOM_TRAITS_H_
 #define CONTENT_COMMON_AX_CONTENT_TREE_DATA_MOJOM_TRAITS_H_
 
-#include "content/common/ax_content_node_data.h"
+#include "content/common/ax_content_tree_data.h"
 #include "content/common/ax_content_tree_data.mojom-shared.h"
 #include "ui/accessibility/ax_tree_data.h"
 

content/common/ax_content_tree_update.h

@@ -0,0 +1,21 @@
+// Copyright 2020 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.
+
+#ifndef CONTENT_COMMON_AX_CONTENT_TREE_UPDATE_H_
+#define CONTENT_COMMON_AX_CONTENT_TREE_UPDATE_H_
+
+#include "content/common/ax_content_node_data.h"
+#include "content/common/ax_content_tree_data.h"
+#include "content/common/content_export.h"
+#include "ui/accessibility/ax_tree_update.h"
+
+namespace content {
+
+typedef ui::AXTreeUpdateBase<content::AXContentNodeData,
+                             content::AXContentTreeData>
+    AXContentTreeUpdate;
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_AX_CONTENT_TREE_UPDATE_H_

content/common/ax_content_tree_update_mojom_traits.h

@@ -7,7 +7,9 @@
 
 #include "content/common/ax_content_node_data.h"
 #include "content/common/ax_content_node_data_mojom_traits.h"
+#include "content/common/ax_content_tree_data.h"
 #include "content/common/ax_content_tree_data_mojom_traits.h"
+#include "content/common/ax_content_tree_update.h"
 #include "content/common/ax_content_tree_update.mojom-shared.h"
 #include "ui/accessibility/mojom/ax_event_intent_mojom_traits.h"
 

content/renderer/accessibility/aom_content_ax_tree.cc

@@ -7,6 +7,7 @@
 #include <string>
 
 #include "content/common/ax_content_node_data.h"
+#include "content/common/ax_content_tree_update.h"
 #include "content/renderer/accessibility/render_accessibility_impl.h"
 #include "third_party/blink/public/web/web_ax_enums.h"
 #include "ui/accessibility/ax_enum_util.h"

content/renderer/accessibility/blink_ax_tree_source.h

@@ -12,6 +12,7 @@
 
 #include "base/optional.h"
 #include "content/common/ax_content_node_data.h"
+#include "content/common/ax_content_tree_data.h"
 #include "third_party/blink/public/web/web_ax_object.h"
 #include "third_party/blink/public/web/web_document.h"
 #include "ui/accessibility/ax_mode.h"

content/renderer/accessibility/render_accessibility_impl.h

@@ -12,6 +12,8 @@
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "content/common/ax_content_node_data.h"
+#include "content/common/ax_content_tree_data.h"
+#include "content/common/ax_content_tree_update.h"
 #include "content/common/content_export.h"
 #include "content/common/render_accessibility.mojom.h"
 #include "content/public/renderer/plugin_ax_tree_source.h"

content/renderer/accessibility/render_accessibility_impl_browsertest.cc

@@ -17,6 +17,7 @@
 #include "base/test/task_environment.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
+#include "content/common/ax_content_tree_update.h"
 #include "content/common/frame_messages.h"
 #include "content/common/render_accessibility.mojom-test-utils.h"
 #include "content/common/render_accessibility.mojom.h"

content/renderer/accessibility/render_accessibility_manager.h

@@ -9,6 +9,7 @@
 
 #include "base/macros.h"
 #include "content/common/ax_content_node_data.h"
+#include "content/common/ax_content_tree_update.h"
 #include "content/common/content_export.h"
 #include "content/common/render_accessibility.mojom.h"
 #include "mojo/public/cpp/bindings/associated_receiver.h"

content/renderer/render_frame_impl.cc

@@ -50,6 +50,7 @@
 #include "build/build_config.h"
 #include "cc/base/switches.h"
 #include "content/common/associated_interfaces.mojom.h"
+#include "content/common/ax_content_tree_update.h"
 #include "content/common/content_constants_internal.h"
 #include "content/common/content_navigation_policy.h"
 #include "content/common/frame.mojom.h"