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

chrome/browser/ui/views/infobars/infobar_view.cc

Index: chrome/browser/ui/views/infobars/infobar_view.cc
diff --git a/chrome/browser/ui/views/infobars/infobar_view.cc b/chrome/browser/ui/views/infobars/infobar_view.cc
index bd70505b71c9b8fee9580a172535a2a42e7a27a5..cd5da729fc2dd5f3a44d56c1e75a7e5fa3da9f37 100644
--- a/chrome/browser/ui/views/infobars/infobar_view.cc
+++ b/chrome/browser/ui/views/infobars/infobar_view.cc
@@ -304,7 +304,7 @@ void InfoBarView::ButtonPressed(views::Button* sender,
   }
 }
 
-int InfoBarView::ContentMinimumWidth() {
+int InfoBarView::ContentMinimumWidth() const {
   return 0;
 }
 
@@ -403,7 +403,7 @@ void InfoBarView::GetAccessibleState(ui::AXViewState* state) {
   state->keyboard_shortcut = base::ASCIIToUTF16("Alt+Shift+A");
 }
 
-gfx::Size InfoBarView::GetPreferredSize() {
+gfx::Size InfoBarView::GetPreferredSize() const {
   return gfx::Size(
       kEdgeItemPadding + (icon_ ? (icon_->width() + kIconToLabelSpacing) : 0) +
           ContentMinimumWidth() + kBeforeCloseButtonSpacing +