Add an option to not prune the Android AX tree, to preserve more style info.

content/browser/web_contents/web_contents_android.cc

 // Copyright 2013 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/browser/web_contents/web_contents_android.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/command_line.h"
 #include "base/containers/hash_tables.h"
 #include "base/json/json_writer.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "content/browser/accessibility/browser_accessibility_android.h"
-#include "content/browser/accessibility/browser_accessibility_manager.h"
+#include "content/browser/accessibility/browser_accessibility_manager_android.h"
 #include "content/browser/android/interstitial_page_delegate_android.h"
 #include "content/browser/frame_host/interstitial_page_impl.h"
 #include "content/browser/media/android/browser_media_player_manager.h"
 #include "content/browser/media/media_web_contents_observer.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/common/devtools_messages.h"
 #include "content/common/frame_messages.h"
 #include "content/common/input_messages.h"
 #include "content/common/view_messages.h"
@@ skipping 71 matching lines @@
 }
 
 // Walks over the AXTreeUpdate and creates a light weight snapshot.
 void AXTreeSnapshotCallback(const ScopedJavaGlobalRef<jobject>& callback,
                             const ui::AXTreeUpdate& result) {
   JNIEnv* env = base::android::AttachCurrentThread();
   if (result.nodes.empty()) {
     Java_WebContentsImpl_onAccessibilitySnapshot(env, nullptr, callback.obj());
     return;
   }
-  scoped_ptr<BrowserAccessibilityManager> manager(
-      BrowserAccessibilityManager::Create(result, nullptr));
+  scoped_ptr<BrowserAccessibilityManagerAndroid> manager(
+      static_cast<BrowserAccessibilityManagerAndroid*>(
+          BrowserAccessibilityManager::Create(result, nullptr)));
+  manager->set_prune_tree_for_screen_reader(false);
   BrowserAccessibilityAndroid* root =
       static_cast<BrowserAccessibilityAndroid*>(manager->GetRoot());
   ScopedJavaLocalRef<jobject> j_root = WalkAXTreeDepthFirst(env, root);
   Java_WebContentsImpl_onAccessibilitySnapshot(
       env, j_root.obj(), callback.obj());
 }
 
 void ReleaseAllMediaPlayers(WebContents* web_contents,
                             RenderFrameHost* render_frame_host) {
   BrowserMediaPlayerManager* manager =
@@ skipping 313 matching lines @@
   ScopedJavaGlobalRef<jobject> j_callback;
   j_callback.Reset(env, callback);
   WebContentsImpl::AXTreeSnapshotCallback snapshot_callback =
       base::Bind(&AXTreeSnapshotCallback, j_callback);
 
   static_cast<WebContentsImpl*>(web_contents_)->RequestAXTreeSnapshot(
       snapshot_callback);
 }
 
 }  // namespace content