Scope and clean up uses of AccessibilityMode.

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index 2daf76a0a060f226895085cd7feedadfe38e5cd6..443b99ffb912e006b5a795e15c526f23a820b0fd 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -173,6 +173,11 @@ namespace {
 const int kMinimumDelayBetweenLoadingUpdatesMS = 100;
 const char kDotGoogleDotCom[] = ".google.com";
 
+const AccessibilityMode kAccessibilityModeWebContent(
+    AccessibilityMode::kWebContents | AccessibilityMode::kInlineTextBoxes |
+    AccessibilityMode::kScreenReader |
+    AccessibilityMode::kHTML);
+
 #if defined(OS_ANDROID)
 const char kWebContentsAndroidKey[] = "web_contents_android";
 #endif  // OS_ANDROID
@@ -969,7 +974,9 @@ void WebContentsImpl::SetAccessibilityMode(AccessibilityMode mode) {
 }
 
 void WebContentsImpl::AddAccessibilityMode(AccessibilityMode mode) {
-  SetAccessibilityMode(accessibility_mode_ | mode);
+  AccessibilityMode new_mode(accessibility_mode_);
+  new_mode |= mode;
+  SetAccessibilityMode(new_mode);
 }
 
 void WebContentsImpl::RequestAXTreeSnapshot(AXTreeSnapshotCallback callback) {
@@ -1081,20 +1088,25 @@ const std::string& WebContentsImpl::GetUserAgentOverride() const {
 }
 
 void WebContentsImpl::EnableWebContentsOnlyAccessibilityMode() {
-  if (GetAccessibilityMode() != AccessibilityModeOff) {
+  const AccessibilityMode accessibility_mode_off(AccessibilityMode::kOff);
+  if (GetAccessibilityMode() != accessibility_mode_off) {
     for (RenderFrameHost* rfh : GetAllFrames())
       ResetAccessibility(rfh);
   } else {
-    AddAccessibilityMode(ACCESSIBILITY_MODE_WEB_CONTENTS_ONLY);
+    AddAccessibilityMode(kAccessibilityModeWebContent);
   }
 }
 
 bool WebContentsImpl::IsWebContentsOnlyAccessibilityModeForTesting() const {
-  return accessibility_mode_ == ACCESSIBILITY_MODE_WEB_CONTENTS_ONLY;
+  return accessibility_mode_ == kAccessibilityModeWebContent;
 }
 
 bool WebContentsImpl::IsFullAccessibilityModeForTesting() const {
-  return accessibility_mode_ == ACCESSIBILITY_MODE_COMPLETE;
+  AccessibilityMode complete_mode(
+      AccessibilityMode::kNativeAPIs | AccessibilityMode::kWebContents |
+      AccessibilityMode::kInlineTextBoxes | AccessibilityMode::kScreenReader |
+      AccessibilityMode::kHTML);
+  return accessibility_mode_ == complete_mode;
 }
 
 const PageImportanceSignals& WebContentsImpl::GetPageImportanceSignals() const {