Add accessibilityEnabled and inlineTextBoxAccessiblityEnabled to Settings, but don't use them yet.

Source/web/WebSettingsImpl.h

Index: Source/web/WebSettingsImpl.h
diff --git a/Source/web/WebSettingsImpl.h b/Source/web/WebSettingsImpl.h
index 111090de14f4e7a73e20e9d7cc9344ab3cf40982..30e22560742f23d5e6af2fd0b0d4cf7d02a28fbc 100644
--- a/Source/web/WebSettingsImpl.h
+++ b/Source/web/WebSettingsImpl.h
@@ -53,6 +53,7 @@ public:
     virtual void setAcceleratedCompositingForOverflowScrollEnabled(bool) OVERRIDE;
     virtual void setCompositorDrivenAcceleratedScrollingEnabled(bool) OVERRIDE;
     virtual void setAcceleratedCompositingForFixedRootBackgroundEnabled(bool) OVERRIDE;
+    virtual void setAccessibilityEnabled(bool) OVERRIDE;
     virtual void setAllowDisplayOfInsecureContent(bool) OVERRIDE;
     virtual void setAllowFileAccessFromFileURLs(bool) OVERRIDE;
     virtual void setAllowCustomScrollbarInMainFrame(bool) OVERRIDE;
@@ -96,6 +97,7 @@ public:
     virtual void setHyperlinkAuditingEnabled(bool) OVERRIDE;
     virtual void setIgnoreMainFrameOverflowHiddenQuirk(bool) OVERRIDE;
     virtual void setImagesEnabled(bool) OVERRIDE;
+    virtual void setInlineTextBoxAccessibilityEnabled(bool) OVERRIDE;
     virtual void setJavaEnabled(bool) OVERRIDE;
     virtual void setJavaScriptCanAccessClipboard(bool) OVERRIDE;
     virtual void setJavaScriptCanOpenWindowsAutomatically(bool) OVERRIDE;