Change the one-click sign in confirmation bubble into a modal dialog

chrome/browser/ui/browser_window.h

Index: chrome/browser/ui/browser_window.h
diff --git a/chrome/browser/ui/browser_window.h b/chrome/browser/ui/browser_window.h
index c34b37f50e35f35d55a445dbc065b34210d8490c..fa812194dbf078b8750547c02b35431caccdc16e 100644
--- a/chrome/browser/ui/browser_window.h
+++ b/chrome/browser/ui/browser_window.h
@@ -218,6 +218,11 @@ class BrowserWindow : public BaseWindow {
   virtual void ShowChromeToMobileBubble() = 0;
 
 #if defined(ENABLE_ONE_CLICK_SIGNIN)
+  enum OneClickSigninBubbleType {
+    ONE_CLICK_SIGNIN_BUBBLE_TYPE_BUBBLE,
+    ONE_CLICK_SIGNIN_BUBBLE_TYPE_MODAL_DIALOG
+  };
+
   // Callback type used with the ShowOneClickSigninBubble() method.  If the
   // user chooses to accept the sign in, the callback is called to start the
   // sync process.
@@ -226,6 +231,7 @@ class BrowserWindow : public BaseWindow {
 
   // Shows the one-click sign in bubble.
   virtual void ShowOneClickSigninBubble(
+      OneClickSigninBubbleType type,
       const StartSyncCallback& start_sync_callback) = 0;
 #endif