Show an info icon with a tooltip for PSL-matches in the account chooser on Views.

chrome/browser/ui/views/passwords/credentials_item_view.h

Index: chrome/browser/ui/views/passwords/credentials_item_view.h
diff --git a/chrome/browser/ui/views/passwords/credentials_item_view.h b/chrome/browser/ui/views/passwords/credentials_item_view.h
index f11287c219b8054db8bc7d1874278fe8d859e9a7..1073c37b39a17e11cee42123bb8cd6979dea152e 100644
--- a/chrome/browser/ui/views/passwords/credentials_item_view.h
+++ b/chrome/browser/ui/views/passwords/credentials_item_view.h
@@ -9,6 +9,7 @@
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/ui/passwords/account_avatar_fetcher.h"
 #include "ui/views/controls/button/label_button.h"
+#include "ui/views/controls/button/vector_icon_button_delegate.h"
 
 namespace autofill {
 struct PasswordForm;
@@ -25,11 +26,13 @@ class URLRequestContextGetter;
 namespace views {
 class ImageView;
 class Label;
+class VectorIconButton;
 }
 
 // CredentialsItemView represents a credential view in the account chooser
 // bubble.
 class CredentialsItemView : public AccountAvatarFetcherDelegate,
+                            public views::VectorIconButtonDelegate,
                             public views::LabelButton {
  public:
   CredentialsItemView(views::ButtonListener* button_listener,
@@ -57,11 +60,16 @@ class CredentialsItemView : public AccountAvatarFetcherDelegate,
   void Layout() override;
   void OnPaint(gfx::Canvas* canvas) override;
 
+  // VectorIconButtonDelegate:
+  void ButtonPressed(views::Button* sender, const ui::Event& event) override;
+  SkColor GetVectorIconBaseColor() const override;
+
   const autofill::PasswordForm* form_;
 
   views::ImageView* image_view_;
   views::Label* upper_label_;
   views::Label* lower_label_;
+  views::VectorIconButton* info_button_;
 
   SkColor hover_color_;