Deprecate WEBKIT thread

content/public/browser/browser_thread.h

Index: content/public/browser/browser_thread.h
diff --git a/content/public/browser/browser_thread.h b/content/public/browser/browser_thread.h
index 743bec6e550a829b0686297db9b410d465d3499c..cf54b4cb71e364f4c51b755f5d4b53a5f071827c 100644
--- a/content/public/browser/browser_thread.h
+++ b/content/public/browser/browser_thread.h
@@ -64,7 +64,9 @@ class CONTENT_EXPORT BrowserThread {
 
     // This is the "main" thread for WebKit within the browser process when
     // NOT in --single-process mode.
-    WEBKIT,
+    // Deprecated: Do not design new code to use this thread; see
+    // http://crbug.com/106839
+    WEBKIT_DEPRECATED,
 
     // This is the thread that interacts with the file system.
     FILE,
@@ -237,7 +239,7 @@ class CONTENT_EXPORT BrowserThread {
   struct DeleteOnIOThread : public DeleteOnThread<IO> { };
   struct DeleteOnFileThread : public DeleteOnThread<FILE> { };
   struct DeleteOnDBThread : public DeleteOnThread<DB> { };
-  struct DeleteOnWebKitThread : public DeleteOnThread<WEBKIT> { };
+  struct DeleteOnWebKitThread : public DeleteOnThread<WEBKIT_DEPRECATED> { };
 
  private:
   friend class BrowserThreadImpl;