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

chrome/test/base/testing_browser_process.cc

Index: chrome/test/base/testing_browser_process.cc
diff --git a/chrome/test/base/testing_browser_process.cc b/chrome/test/base/testing_browser_process.cc
index 483e99dfd41351f67644ca7d7f5fb416b30f1ace..15cb6955924d0ebdcf1196dc51f8700812c1d38d 100644
--- a/chrome/test/base/testing_browser_process.cc
+++ b/chrome/test/base/testing_browser_process.cc
@@ -46,6 +46,7 @@
 #if BUILDFLAG(ENABLE_PRINT_PREVIEW)
 #include "chrome/browser/printing/background_printing_manager.h"
 #include "chrome/browser/printing/print_preview_dialog_controller.h"
+#include "chrome/browser/printing/print_preview_test.h"
 #endif
 
 // static
@@ -270,9 +271,10 @@ printing::PrintJobManager* TestingBrowserProcess::print_job_manager() {
 printing::PrintPreviewDialogController*
 TestingBrowserProcess::print_preview_dialog_controller() {
 #if BUILDFLAG(ENABLE_PRINT_PREVIEW)
-  if (!print_preview_dialog_controller_.get())
+  if (!print_preview_dialog_controller_.get()) {
     print_preview_dialog_controller_ =
         new printing::PrintPreviewDialogController();
+  }
   return print_preview_dialog_controller_.get();
 #else
   NOTIMPLEMENTED();
@@ -280,6 +282,15 @@ TestingBrowserProcess::print_preview_dialog_controller() {
 #endif
 }
 
+void TestingBrowserProcess::SetPrintPreviewDialogController(
+    printing::PrintPreviewDialogController* controller) {
+#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
+  print_preview_dialog_controller_ = controller;
+#else
+  NOTIMPLEMENTED();
+#endif
+}
+
 printing::BackgroundPrintingManager*
 TestingBrowserProcess::background_printing_manager() {
 #if BUILDFLAG(ENABLE_PRINT_PREVIEW)