Fix sizing issues in the tab modal signin flow.

chrome/browser/ui/webui/signin/sync_confirmation_handler.cc

Index: chrome/browser/ui/webui/signin/sync_confirmation_handler.cc
diff --git a/chrome/browser/ui/webui/signin/sync_confirmation_handler.cc b/chrome/browser/ui/webui/signin/sync_confirmation_handler.cc
index df51a0d195a06e803804e9a1cb407d2a7358a3e3..12029478ffeeb2f98a057cd12a4666e8a97060fd 100644
--- a/chrome/browser/ui/webui/signin/sync_confirmation_handler.cc
+++ b/chrome/browser/ui/webui/signin/sync_confirmation_handler.cc
@@ -10,6 +10,7 @@
 #include "chrome/browser/signin/signin_manager_factory.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_window.h"
+#include "chrome/browser/ui/signin_view_controller_delegate.h"
 #include "chrome/browser/ui/webui/signin/login_ui_service_factory.h"
 #include "components/signin/core/browser/account_tracker_service.h"
 #include "content/public/browser/user_metrics.h"
@@ -32,12 +33,12 @@ void SyncConfirmationHandler::RegisterMessages() {
                  base::Unretained(this)));
   web_ui()->RegisterMessageCallback("undo",
       base::Bind(&SyncConfirmationHandler::HandleUndo, base::Unretained(this)));
-  web_ui()->RegisterMessageCallback("initialized",
-      base::Bind(&SyncConfirmationHandler::HandleInitialized,
-                 base::Unretained(this)));
   web_ui()->RegisterMessageCallback("goToSettings",
       base::Bind(&SyncConfirmationHandler::HandleGoToSettings,
                  base::Unretained(this)));
+  web_ui()->RegisterMessageCallback("initializedWithSize",
+      base::Bind(&SyncConfirmationHandler::HandleInitializedWithSize,
+                 base::Unretained(this)));
 }
 
 void SyncConfirmationHandler::HandleConfirm(const base::ListValue* args) {
@@ -59,23 +60,6 @@ void SyncConfirmationHandler::HandleUndo(const base::ListValue* args) {
   browser->CloseModalSigninWindow();
 }
 
-void SyncConfirmationHandler::HandleInitialized(const base::ListValue* args) {
-  Browser* browser = GetDesktopBrowser();
-  Profile* profile = browser->profile();
-  std::vector<AccountInfo> accounts =
-      AccountTrackerServiceFactory::GetForProfile(profile)->GetAccounts();
-
-  if (accounts.empty())
-    return;
-
-  AccountInfo primary_account_info = accounts[0];
-
-  if (!primary_account_info.IsValid())
-    AccountTrackerServiceFactory::GetForProfile(profile)->AddObserver(this);
-  else
-    SetUserImageURL(primary_account_info.picture_url);
-}
-
 void SyncConfirmationHandler::SetUserImageURL(const std::string& picture_url) {
   GURL url;
   if (profiles::GetImageURLWithThumbnailSize(GURL(picture_url),
@@ -111,3 +95,28 @@ void SyncConfirmationHandler::CloseModalSigninWindow(
       SyncConfirmationUIClosed(results);
   browser->CloseModalSigninWindow();
 }
+
+void SyncConfirmationHandler::HandleInitializedWithSize(
+    const base::ListValue* args) {
+  Browser* browser = GetDesktopBrowser();
+  Profile* profile = browser->profile();
+  std::vector<AccountInfo> accounts =
+      AccountTrackerServiceFactory::GetForProfile(profile)->GetAccounts();
+
+  if (accounts.empty())
+    return;
+
+  AccountInfo primary_account_info = accounts[0];
+
+  if (!primary_account_info.IsValid())
+    AccountTrackerServiceFactory::GetForProfile(profile)->AddObserver(this);
+  else
+    SetUserImageURL(primary_account_info.picture_url);
+
+  double height;
+  bool success = args->GetDouble(0, &height);
+  DCHECK(success);
+
+  browser->signin_view_controller()->delegate()->ResizeNativeView(
+      static_cast<int>(height));
+}