Add a policy for disabling the stripping of PAC URLs.

chrome/browser/io_thread.h

Index: chrome/browser/io_thread.h
diff --git a/chrome/browser/io_thread.h b/chrome/browser/io_thread.h
index d6fff0794518dc406b3cebaecd4c2b381b067e16..dd780b8cd9e932313429d846226841f1c13c7d57 100644
--- a/chrome/browser/io_thread.h
+++ b/chrome/browser/io_thread.h
@@ -238,6 +238,17 @@ class IOThread : public content::BrowserThreadDelegate {
   // Un-registers the |observer|.
   void UnregisterSTHObserver(net::ct::STHObserver* observer);
 
+  // Returns true if the indicated proxy resolution features are
+  // enabled. These features are controlled through
+  // preferences/policy/commandline.
+  //
+  // For a description of what these features are, and how they are
+  // configured, see the comments in pref_names.cc for
+  // |kQuickCheckEnabled| and |kPacHttpsUrlStrippingEnabled
+  // respectively.
+  bool WpadQuickCheckEnabled() const;
+  bool PacHttpsUrlStrippingEnabled() const;
+
  private:
   // Provide SystemURLRequestContextGetter with access to
   // InitSystemRequestContext().
@@ -328,6 +339,8 @@ class IOThread : public content::BrowserThreadDelegate {
 
   BooleanPrefMember quick_check_enabled_;
 
+  BooleanPrefMember pac_https_url_stripping_enabled_;
+
   // Store HTTP Auth-related policies in this thread.
   // TODO(aberent) Make the list of auth schemes a PrefMember, so that the
   // policy can change after startup (https://crbug/549273).