Convert accessibility_helper.mojom to snake casing

chrome/browser/chromeos/arc/accessibility/arc_accessibility_helper_bridge_unittest.cc

 // Copyright 2017 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/browser/chromeos/arc/accessibility/arc_accessibility_helper_bridge.h"
 
 #include <unordered_map>
 #include <utility>
 
 #include "base/command_line.h"
@@ skipping 125 matching lines @@
 
   helper_bridge->OnTaskCreated(1, "com.android.vending", "launch", "");
   ASSERT_EQ(0U, package_to_tree.size());
   ASSERT_EQ(1U, package_to_ids.size());
   auto it1 = package_to_ids.find("com.android.vending");
   ASSERT_NE(package_to_ids.end(), it1);
   ASSERT_EQ(1U, it1->second.size());
   ASSERT_EQ(1U, it1->second.count(1));
 
   auto event = arc::mojom::AccessibilityEventData::New();
-  event->sourceId = 1;
-  event->eventType = arc::mojom::AccessibilityEventType::VIEW_FOCUSED;
-  event->nodeData.push_back(arc::mojom::AccessibilityNodeInfoData::New());
-  event->nodeData[0]->id = 1;
-  event->nodeData[0]->stringProperties =
+  event->source_id = 1;
+  event->event_type = arc::mojom::AccessibilityEventType::VIEW_FOCUSED;
+  event->node_data.push_back(arc::mojom::AccessibilityNodeInfoData::New());
+  event->node_data[0]->id = 1;
+  event->node_data[0]->string_properties =
       std::unordered_map<arc::mojom::AccessibilityStringProperty,
                          std::string>();
-  event->nodeData[0]->stringProperties.value().insert(
+  event->node_data[0]->string_properties.value().insert(
       std::make_pair(arc::mojom::AccessibilityStringProperty::PACKAGE_NAME,
                      "com.android.vending"));
 
   // Task 1 is not current; gets rejected.
   helper_bridge->OnAccessibilityEvent(event.Clone());
   ASSERT_EQ(0U, package_to_tree.size());
 
   // Task 1 is now current.
   helper_bridge->OnTaskSetActive(1);
   helper_bridge->OnAccessibilityEvent(event.Clone());
   ASSERT_EQ(1U, package_to_tree.size());
 }
 
 }  // namespace arc