Created min size for print preview dialog and modified to allow the

components/web_modal/web_contents_modal_dialog_manager.h

Index: components/web_modal/web_contents_modal_dialog_manager.h
diff --git a/components/web_modal/web_contents_modal_dialog_manager.h b/components/web_modal/web_contents_modal_dialog_manager.h
index 6505301c215f73fa3e250b800f239dd3de988208..374cd705d1bbf69231e37640d13b508848549c2b 100644
--- a/components/web_modal/web_contents_modal_dialog_manager.h
+++ b/components/web_modal/web_contents_modal_dialog_manager.h
@@ -37,6 +37,12 @@ class WebContentsModalDialogManager
   // WillClose() when it is being destroyed.
   void ShowModalDialog(gfx::NativeWindow dialog);
 
+  // Shows the dialog as a non clipped web contents modal dialog. The dialog
+  // will be able to extend outside the bounds of the parent window on platforms
+  // where this is allowed. The dialog will notify via WillClose() when it is
+  // being destroyed.
+  void ShowNonClippedModalDialog(gfx::NativeWindow dialog);
+
   // Allow clients to supply their own native dialog manager. Suitable for
   // bubble clients.
   void ShowDialogWithManager(
@@ -53,6 +59,7 @@ class WebContentsModalDialogManager
   // SingleWebContentsDialogManagerDelegate:
   content::WebContents* GetWebContents() const override;
   void WillClose(gfx::NativeWindow dialog) override;
+  bool IsNonClipped(gfx::NativeWindow dialog) override;
 
   // For testing.
   class TestApi {
@@ -85,6 +92,7 @@ class WebContentsModalDialogManager
   };
 
   typedef std::deque<DialogState*> WebContentsModalDialogList;
+  typedef std::deque<gfx::NativeWindow> NativeWindowDialogList;

[Mike Wittman, 2016/08/12 22:51:34]

std::set would be better given how this is used. Also unless you have a specific
reason for it, this shouldn't have a typedef. The existing typedef is a legacy
of pre-auto C++.

[rbpotter, 2016/08/15 18:03:46]

Done.

 
   // Utility function to get the dialog state for a dialog.
   WebContentsModalDialogList::iterator FindDialogState(
@@ -114,6 +122,9 @@ class WebContentsModalDialogManager
   // All active dialogs.
   WebContentsModalDialogList child_dialogs_;
 
+  // All non clipped active dialogs.
+  NativeWindowDialogList nonclipped_child_dialogs_;
+
   // True while closing the dialogs on WebContents close.
   bool closing_all_dialogs_;