Start consolidating cross-port file selection code into ui/base/dialogs.

chrome/browser/ui/select_file_dialog.h

Index: chrome/browser/ui/select_file_dialog.h
diff --git a/chrome/browser/ui/select_file_dialog.h b/chrome/browser/ui/select_file_dialog.h
index 081c787563fb7602f7b57828b86c3ef47fd19b25..4d5ade41e2b1624a109866af147d990417efb605 100644
--- a/chrome/browser/ui/select_file_dialog.h
+++ b/chrome/browser/ui/select_file_dialog.h
@@ -9,12 +9,17 @@
 #include <string>
 #include <vector>
 
+#include "base/callback_forward.h"
 #include "base/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/string16.h"
-#include "chrome/browser/ui/base_shell_dialog.h"
+#include "ui/base/dialogs/base_shell_dialog.h"
 #include "ui/gfx/native_widget_types.h"
 
+namespace ui {
+class SelectFilePolicy;
+}
+
 namespace content {
 class WebContents;
 struct SelectedFileInfo;
@@ -29,7 +34,7 @@ extern std::wstring AppendExtensionIfNeeded(const std::wstring& filename,
 // Shows a dialog box for selecting a file or a folder.
 class SelectFileDialog
     : public base::RefCountedThreadSafe<SelectFileDialog>,
-      public BaseShellDialog {
+      public ui::BaseShellDialog {
  public:
   enum Type {
     SELECT_NONE,
@@ -82,6 +87,10 @@ class SelectFileDialog
     virtual ~Listener() {}
   };
 
+  // Sets the global file policy class. This is an optional class that lets the
+  // implementer block the showing of file dialogs.
+  static void SetFilePolicy(ui::SelectFilePolicy* policy);
+
   // Creates a dialog box helper. This object is ref-counted, but the returned
   // object will have no reference (refcount is 0).
   static SelectFileDialog* Create(Listener* listener);
@@ -126,9 +135,9 @@ class SelectFileDialog
   // |default_extension| is the default extension to add to the file if the
   //   user doesn't type one. This should NOT include the '.'. On Windows, if
   //   you specify this you must also specify |file_types|.
-  // |source_contents| is the WebContents the call is originating from, i.e.
-  //   where the InfoBar should be shown in case file-selection dialogs are
-  //   forbidden by policy, or NULL if no InfoBar should be shown.
+  // |policy_denied| is a closure called if there is a ui::SelectFilePolicy
+  //   object which denied opening this dialog. Pass an empty closure if you
+  //   want no action to be taken.
   // |owning_window| is the window the dialog is modal to, or NULL for a
   //   modeless dialog.
   // |params| is data from the calling context which will be passed through to
@@ -141,7 +150,7 @@ class SelectFileDialog
                   const FileTypeInfo* file_types,
                   int file_type_index,
                   const FilePath::StringType& default_extension,
-                  content::WebContents* source_contents,
+                  const base::Closure& policy_denied,
                   gfx::NativeWindow owning_window,
                   void* params);
   bool HasMultipleFileTypeChoices();
@@ -179,6 +188,8 @@ class SelectFileDialog
 
   // Returns true if the dialog has multiple file type choices.
   virtual bool HasMultipleFileTypeChoicesImpl() = 0;
+
+  static ui::SelectFilePolicy* select_file_policy_;
 };
 
 #endif  // CHROME_BROWSER_UI_SELECT_FILE_DIALOG_H_