Add flag to disable full PAN storage.

chrome/browser/ui/views/autofill/card_unmask_prompt_views.cc

Index: chrome/browser/ui/views/autofill/card_unmask_prompt_views.cc
diff --git a/chrome/browser/ui/views/autofill/card_unmask_prompt_views.cc b/chrome/browser/ui/views/autofill/card_unmask_prompt_views.cc
index f6487bfc3bc6b505e562a511af166cb7fc79574a..da3c23e83f63ba765b6e84e1c128b0649010cecb 100644
--- a/chrome/browser/ui/views/autofill/card_unmask_prompt_views.cc
+++ b/chrome/browser/ui/views/autofill/card_unmask_prompt_views.cc
@@ -39,9 +39,11 @@ namespace {
 // dialog.
 const int kEdgePadding = 19;
 
+#if !defined(OS_LINUX)
 // From AutofillDialogViews. TODO(estade): share.
 SkColor kShadingColor = SkColorSetARGB(7, 0, 0, 0);
 SkColor kSubtleBorderColor = SkColorSetARGB(10, 0, 0, 0);
+#endif
 
 class CardUnmaskPromptViews : public CardUnmaskPromptView,
                               views::ComboboxListener,
@@ -155,6 +157,7 @@ class CardUnmaskPromptViews : public CardUnmaskPromptView,
     return this;
   }
 
+#if !defined(OS_LINUX)
   views::View* CreateFootnoteView() override {
     // Local storage checkbox and (?) tooltip.
     views::View* storage_row = new views::View();
@@ -177,6 +180,7 @@ class CardUnmaskPromptViews : public CardUnmaskPromptView,
 
     return storage_row;
   }
+#endif
 
   // views::View
   gfx::Size GetPreferredSize() const override {
@@ -414,6 +418,7 @@ class CardUnmaskPromptViews : public CardUnmaskPromptView,
   // The error label for most errors, which lives beneath the inputs.
   views::Label* error_label_;
 
+  // Will be null on platforms that don't support saving locally.
   views::Checkbox* storage_checkbox_;
 
   views::View* progress_overlay_;