Add test for accessibility histograms.

The goal is just to make sure this code has test coverage, not to test
correctness. There was an issue in the past where the code that computed
the histograms crashed in debug mode, this will help prevent something like
that from landing in the future.

BUG=99504


Review URL: https://chromiumcodereview.appspot.com/11778045

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@175677 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 5 insertions, 3 deletions

diff --git a/content/browser/accessibility/browser_accessibility_state_impl.h b/content/browser/accessibility/browser_accessibility_state_impl.h
index 40d99fd..46621ea 100644
--- a/content/browser/accessibility/browser_accessibility_state_impl.h
+++ b/content/browser/accessibility/browser_accessibility_state_impl.h
@@ -45,9 +45,7 @@ class CONTENT_EXPORT BrowserAccessibilityStateImpl
   virtual bool IsAccessibleBrowser() OVERRIDE;
   virtual void AddHistogramCallback(base::Closure callback) OVERRIDE;
 
-  // Called a short while after startup to allow time for the accessibility
-  // state to be determined. Updates a histogram with the current state.
-  void UpdateHistogram();
+  virtual void UpdateHistogramsForTesting() OVERRIDE;
 
   AccessibilityMode GetAccessibilityMode();
   void SetAccessibilityMode(AccessibilityMode mode);
@@ -56,6 +54,10 @@ class CONTENT_EXPORT BrowserAccessibilityStateImpl
   friend class base::RefCountedThreadSafe<BrowserAccessibilityStateImpl>;
   friend struct DefaultSingletonTraits<BrowserAccessibilityStateImpl>;
 
+  // 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.
   virtual ~BrowserAccessibilityStateImpl();