Fixed IAccessibleText::TextAtOffset with IA2_TEXT_BOUNDARY_WORD to return text that spans from the …

content/browser/accessibility/browser_accessibility.h

Index: content/browser/accessibility/browser_accessibility.h
diff --git a/content/browser/accessibility/browser_accessibility.h b/content/browser/accessibility/browser_accessibility.h
index 844d3cc25e0a9f71c1ea5183e06cbd892becc218..b875be67c8b71f9c723cc8f6eb7c43713925b4c9 100644
--- a/content/browser/accessibility/browser_accessibility.h
+++ b/content/browser/accessibility/browser_accessibility.h
@@ -22,6 +22,10 @@
 @class BrowserAccessibilityCocoa;
 #endif
 
+namespace ui {
+enum TextBoundaryDirection;
+}
+
 namespace content {
 class BrowserAccessibilityManager;
 #if defined(OS_WIN)
@@ -111,6 +115,11 @@ class CONTENT_EXPORT BrowserAccessibility {
   // the role is WebAXRoleStaticText.
   gfx::Rect GetGlobalBoundsForRange(int start, int len) const;
 
+  // Searches in the given text and from the given offset until the start of
+  // the next or previous word is found and returns its position.
+  int GetWordStartBoundary(
+      int start, ui::TextBoundaryDirection direction) const;
+
   // Returns the deepest descendant that contains the specified point
   // (in global screen coordinates).
   BrowserAccessibility* BrowserAccessibilityForPoint(const gfx::Point& point);