Add DumpAccessibilityEvents test framework.

content/browser/accessibility/accessibility_tree_formatter_win.cc

Index: content/browser/accessibility/accessibility_tree_formatter_win.cc
diff --git a/content/browser/accessibility/accessibility_tree_formatter_win.cc b/content/browser/accessibility/accessibility_tree_formatter_win.cc
index 31367b403440200ca9774a9aee763f07902df169..87850a62d359e90e8192836a2ae9d7bf6a847454 100644
--- a/content/browser/accessibility/accessibility_tree_formatter_win.cc
+++ b/content/browser/accessibility/accessibility_tree_formatter_win.cc
@@ -9,6 +9,7 @@
 #include <string>
 
 #include "base/files/file_path.h"
+#include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
@@ -58,6 +59,7 @@ void AccessibilityTreeFormatter::Initialize() {
 
 void AccessibilityTreeFormatter::AddProperties(
     const BrowserAccessibility& node, base::DictionaryValue* dict) {
+  dict->SetInteger("id", node.GetId());
   BrowserAccessibilityWin* acc_obj =
       const_cast<BrowserAccessibility*>(&node)->ToBrowserAccessibilityWin();
 
@@ -199,10 +201,15 @@ void AccessibilityTreeFormatter::AddProperties(
 }
 
 base::string16 AccessibilityTreeFormatter::ToString(
-    const base::DictionaryValue& dict,
-    const base::string16& indent) {
+    const base::DictionaryValue& dict) {
   base::string16 line;
 
+  if (show_ids_) {
+    int id_value;
+    dict.GetInteger("id", &id_value);
+    WriteAttribute(true, base::IntToString16(id_value), &line);
+  }
+
   base::string16 role_value;
   dict.GetString("role", &role_value);
   WriteAttribute(true, base::UTF16ToUTF8(role_value), &line);
@@ -283,7 +290,7 @@ base::string16 AccessibilityTreeFormatter::ToString(
     }
   }
 
-  return indent + line + base::ASCIIToUTF16("\n");
+  return line;
 }
 
 // static