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

chrome/browser/printing/print_preview_dialog_controller.cc

Index: chrome/browser/printing/print_preview_dialog_controller.cc
diff --git a/chrome/browser/printing/print_preview_dialog_controller.cc b/chrome/browser/printing/print_preview_dialog_controller.cc
index 7aa4b42ba3498729ec1d31d45c34e5461725f951..18e27511cf41753ee31beba354732299b410fdba 100644
--- a/chrome/browser/printing/print_preview_dialog_controller.cc
+++ b/chrome/browser/printing/print_preview_dialog_controller.cc
@@ -78,9 +78,7 @@ PrintPreviewDialogDelegate::~PrintPreviewDialogDelegate() {
 }
 
 ui::ModalType PrintPreviewDialogDelegate::GetDialogModalType() const {
-  // Not used, returning dummy value.
-  NOTREACHED();
-  return ui::MODAL_TYPE_WINDOW;
+  return ui::MODAL_TYPE_CHILD;
 }
 
 base::string16 PrintPreviewDialogDelegate::GetDialogTitle() const {
@@ -99,7 +97,8 @@ void PrintPreviewDialogDelegate::GetWebUIMessageHandlers(
 
 void PrintPreviewDialogDelegate::GetDialogSize(gfx::Size* size) const {
   DCHECK(size);
-  const gfx::Size kMinDialogSize(800, 480);
+  // Modified to match requested size. Previously: 800, 480.
+  const gfx::Size kMinDialogSize(438, 455);
   const int kBorder = 25;
   *size = kMinDialogSize;
 
@@ -114,7 +113,11 @@ void PrintPreviewDialogDelegate::GetDialogSize(gfx::Size* size) const {
     size->SetToMax(host->GetMaximumDialogSize());
   else
     size->SetToMax(outermost_web_contents->GetContainerBounds().size());
-  size->Enlarge(-2 * kBorder, -kBorder);
+  int expand_width = std::min(size->width() - kMinDialogSize.width(),
+                              2 * kBorder);
+  int expand_height = std::min(size->height() - kMinDialogSize.height(),
+                               kBorder);
+  size->Enlarge(-expand_width, -expand_height);
 
 #if defined(OS_MACOSX)
   // Limit the maximum size on MacOS X.
@@ -364,10 +367,19 @@ WebContents* PrintPreviewDialogController::CreatePrintPreviewDialog(
   base::AutoReset<bool> auto_reset(&is_creating_print_preview_dialog_, true);
 
   // The dialog delegates are deleted when the dialog is closed.
+#if defined(OS_MACOSX)
   ConstrainedWebDialogDelegate* web_dialog_delegate =
       ShowConstrainedWebDialog(initiator->GetBrowserContext(),
-                               new PrintPreviewDialogDelegate(initiator),
-                               initiator);
+                                       new PrintPreviewDialogDelegate(
+                                           initiator),
+                                       initiator);
+#else
+ ConstrainedWebDialogDelegate* web_dialog_delegate =
+      ShowTopLevelConstrainedWebDialog(initiator->GetBrowserContext(),
+                                       new PrintPreviewDialogDelegate(
+                                           initiator),
+                                       initiator);
+#endif
 
   WebContents* preview_dialog = web_dialog_delegate->GetWebContents();