Fix showing constrained window for uninitialized tabs

chrome/browser/ui/cocoa/constrained_window/constrained_window_mac_browsertest.mm

Index: chrome/browser/ui/cocoa/constrained_window/constrained_window_mac_browsertest.mm
diff --git a/chrome/browser/ui/cocoa/constrained_window/constrained_window_mac_browsertest.mm b/chrome/browser/ui/cocoa/constrained_window/constrained_window_mac_browsertest.mm
index 75ba703e5dbc68dff06ec8e4b03daf15634eabcb..0390098148abb5ad1cd4fd58f95eafcd8bd321a7 100644
--- a/chrome/browser/ui/cocoa/constrained_window/constrained_window_mac_browsertest.mm
+++ b/chrome/browser/ui/cocoa/constrained_window/constrained_window_mac_browsertest.mm
@@ -5,8 +5,10 @@
 #include "chrome/browser/ui/cocoa/constrained_window/constrained_window_mac2.h"
 
 #include "chrome/app/chrome_command_ids.h"
+#include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_commands.h"
+#include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/cocoa/browser_window_controller.h"
 #include "chrome/browser/ui/tab_contents/tab_contents.h"
@@ -14,6 +16,7 @@
 #include "chrome/test/base/in_process_browser_test.h"
 #include "content/public/browser/web_contents.h"
 #include "googleurl/src/gurl.h"
+#include "ipc/ipc_message.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 using ::testing::NiceMock;
@@ -83,6 +86,34 @@ IN_PROC_BROWSER_TEST_F(ConstrainedWindowMacTest, ShowInInactiveTab) {
   dialog.CloseConstrainedWindow();
 }
 
+// If a tab has never been shown then the associated tab view for the web
+// content will not be created. Verify that adding a constrained window to such
+// a tab works correctly.
+IN_PROC_BROWSER_TEST_F(ConstrainedWindowMacTest, ShowInUninitializedTab) {
+  scoped_ptr<content::WebContents> web_contents(content::WebContents::Create(
+      browser()->profile(), NULL, MSG_ROUTING_NONE, NULL));
+  bool was_blocked = false;
+  chrome::AddWebContents(browser(), NULL, web_contents.release(),
+                         NEW_BACKGROUND_TAB, gfx::Rect(), false, &was_blocked);
+  content::WebContents* tab2 =
+      browser()->tab_strip_model()->GetWebContentsAt(2);
+  ASSERT_TRUE(tab2);
+  EXPECT_FALSE([tab2->GetNativeView() superview]);
+
+  // Show dialog and verify that it's not visible yet.
+  NiceMock<ConstrainedWindowDelegateMock> delegate;
+  ConstrainedWindowMac2 dialog(&delegate, tab2, sheet_);
+  EXPECT_FALSE([sheet_ isVisible]);
+
+  // Activate the tab and verify that the constrained window is shown.
+  browser()->tab_strip_model()->ActivateTabAt(2, true);
+  EXPECT_TRUE([tab2->GetNativeView() superview]);
+  EXPECT_TRUE([sheet_ isVisible]);
+  EXPECT_EQ(1.0, [sheet_ alphaValue]);
+
+  dialog.CloseConstrainedWindow();
+}
+
 // Test that adding a sheet disables tab dragging.
 IN_PROC_BROWSER_TEST_F(ConstrainedWindowMacTest, TabDragging) {
   NiceMock<ConstrainedWindowDelegateMock> delegate;