views: Make view::Views::GetPreferredSize() const.

chrome/browser/ui/views/download/download_item_view.cc

Index: chrome/browser/ui/views/download/download_item_view.cc
diff --git a/chrome/browser/ui/views/download/download_item_view.cc b/chrome/browser/ui/views/download/download_item_view.cc
index a1b609801d36eaadf0b9a1762e2ffdbc1d4f9943..4db589a06c096392ab15f12a7b6bdc812f02f9a9 100644
--- a/chrome/browser/ui/views/download/download_item_view.cc
+++ b/chrome/browser/ui/views/download/download_item_view.cc
@@ -361,7 +361,7 @@ void DownloadItemView::Layout() {
   }
 }
 
-gfx::Size DownloadItemView::GetPreferredSize() {
+gfx::Size DownloadItemView::GetPreferredSize() const {
   int width, height;
 
   // First, we set the height to the height of two rows or text plus margins.
@@ -371,7 +371,7 @@ gfx::Size DownloadItemView::GetPreferredSize() {
   height = std::max<int>(height, DownloadShelf::kSmallProgressIconSize);
 
   if (IsShowingWarningDialog()) {
-    BodyImageSet* body_image_set =
+    const BodyImageSet* body_image_set =
         (mode_ == DANGEROUS_MODE) ? &dangerous_mode_body_image_set_ :
             &malicious_mode_body_image_set_;
     width = kLeftPadding + body_image_set->top_left->width();
@@ -1204,7 +1204,7 @@ void DownloadItemView::ShowWarningDialog() {
   TooltipTextChanged();
 }
 
-gfx::Size DownloadItemView::GetButtonSize() {
+gfx::Size DownloadItemView::GetButtonSize() const {
   DCHECK(discard_button_ && (mode_ == MALICIOUS_MODE || save_button_));
   gfx::Size size;