Add proper path separator(\) for testing AX test cases on windows.

content/browser/accessibility/dump_accessibility_tree_browsertest.cc

Index: content/browser/accessibility/dump_accessibility_tree_browsertest.cc
diff --git a/content/browser/accessibility/dump_accessibility_tree_browsertest.cc b/content/browser/accessibility/dump_accessibility_tree_browsertest.cc
index 94758dd240221363e47b1990fe2e34e774a952f3..696b65953bb3a7d4a58aee9b651b07db93d2e90e 100644
--- a/content/browser/accessibility/dump_accessibility_tree_browsertest.cc
+++ b/content/browser/accessibility/dump_accessibility_tree_browsertest.cc
@@ -66,25 +66,31 @@ class DumpAccessibilityTreeTest : public DumpAccessibilityTestBase {
   void RunAriaTest(const base::FilePath::CharType* file_path) {
     base::FilePath dir_test_data;
     ASSERT_TRUE(PathService::Get(DIR_TEST_DATA, &dir_test_data));
-    base::FilePath test_path(
-        dir_test_data.AppendASCII("accessibility/aria"));
-    ASSERT_TRUE(base::PathExists(test_path))
-        << test_path.LossyDisplayName();
+
+    const char* file_dir = "accessibility/aria";
+  #if defined(OS_WIN)
+    file_dir = "accessibility\\aria";
+  #endif
+    base::FilePath test_path(dir_test_data.AppendASCII(file_dir));
+    ASSERT_TRUE(base::PathExists(test_path)) << test_path.LossyDisplayName();
 
     base::FilePath aria_file = test_path.Append(base::FilePath(file_path));
-    RunTest(aria_file, "accessibility/aria");
+    RunTest(aria_file, file_dir);
   }
 
   void RunHtmlTest(const base::FilePath::CharType* file_path) {
     base::FilePath dir_test_data;
     ASSERT_TRUE(PathService::Get(DIR_TEST_DATA, &dir_test_data));
-    base::FilePath test_path(
-        dir_test_data.AppendASCII("accessibility/html"));
-    ASSERT_TRUE(base::PathExists(test_path))
-        << test_path.LossyDisplayName();
+
+    const char* file_dir = "accessibility/html";
+  #if defined(OS_WIN)
+    file_dir = "accessibility\\html";
+  #endif
+    base::FilePath test_path(dir_test_data.AppendASCII(file_dir));
+    ASSERT_TRUE(base::PathExists(test_path)) << test_path.LossyDisplayName();
 
     base::FilePath html_file = test_path.Append(base::FilePath(file_path));
-    RunTest(html_file, "accessibility/html");
+    RunTest(html_file, file_dir);
   }
 
   std::vector<std::string> Dump() override {