Add more fine-grained accessibility modes.

content/browser/accessibility/browser_accessibility_state_impl.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_STATE_IMPL_H_
 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_STATE_IMPL_H_
 
 #include <vector>
 
 #include "base/compiler_specific.h"
@@ skipping 33 matching lines @@
   void DisableAccessibility() override;
   void ResetAccessibilityMode() override;
   void OnScreenReaderDetected() override;
   bool IsAccessibleBrowser() override;
   void AddHistogramCallback(base::Closure callback) override;
 
   void UpdateHistogramsForTesting() override;
 
   AccessibilityMode accessibility_mode() const { return accessibility_mode_; };
 
-  // Adds the given accessibility mode to the current accessibility mode bitmap.
-  void AddAccessibilityMode(AccessibilityMode mode);
+  // Adds the given accessibility mode flags to the current accessibility
+  // mode bitmap.
+  void AddAccessibilityModeFlags(AccessibilityMode mode);
 
-  // Removes the given accessibility mode from the current accessibility mode
-  // bitmap, managing the bits that are shared with other modes such that a
-  // bit will only be turned off when all modes that depend on it have been
-  // removed.
-  void RemoveAccessibilityMode(AccessibilityMode mode);
+  // Remove the given accessibility mode flags from the current accessibility
+  // mode bitmap.
+  void RemoveAccessibilityModeFlags(AccessibilityMode mode);
 
   // Accessibility objects can have the "hot tracked" state set when
   // the mouse is hovering over them, but this makes tests flaky because
   // the test behaves differently when the mouse happens to be over an
   // element.  This is a global switch to not use the "hot tracked" state
   // in a test.
   void set_disable_hot_tracking_for_testing(bool disable_hot_tracking) {
     disable_hot_tracking_ = disable_hot_tracking;
   }
   bool disable_hot_tracking_for_testing() const {
     return disable_hot_tracking_;
   }
 
  private:
   friend class base::RefCountedThreadSafe<BrowserAccessibilityStateImpl>;
   friend struct base::DefaultSingletonTraits<BrowserAccessibilityStateImpl>;
 
   // Resets accessibility_mode_ to the default value.
   void ResetAccessibilityModeValue();
 
   // Called a short while after startup to allow time for the accessibility
   // state to be determined. Updates histograms with the current state.
   void UpdateHistograms();
 
   // Leaky singleton, destructor generally won't be called.
   ~BrowserAccessibilityStateImpl() override;
 
   void UpdatePlatformSpecificHistograms();
 
-  // Updates the accessibility mode of all web contents, including swapped out
-  // ones. |add| specifies whether the mode should be added or removed.
-  void AddOrRemoveFromAllWebContents(AccessibilityMode mode, bool add);
-
   AccessibilityMode accessibility_mode_;
 
   std::vector<base::Closure> histogram_callbacks_;
 
   bool disable_hot_tracking_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityStateImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_STATE_IMPL_H_