Implement basic theming for panel titlebars.

chrome/browser/ui/panels/panel_browser_window_cocoa_unittest.mm

Index: chrome/browser/ui/panels/panel_browser_window_cocoa_unittest.mm
diff --git a/chrome/browser/ui/panels/panel_browser_window_cocoa_unittest.mm b/chrome/browser/ui/panels/panel_browser_window_cocoa_unittest.mm
index e667d9c2b961e2c214d8fa8da5e7aad41e3cafcf..9087b35d035b52f062ad6eac44e1b07a4d83f6c2 100644
--- a/chrome/browser/ui/panels/panel_browser_window_cocoa_unittest.mm
+++ b/chrome/browser/ui/panels/panel_browser_window_cocoa_unittest.mm
@@ -308,3 +308,15 @@ TEST_F(PanelBrowserWindowCocoaTest, MenuItems) {
 
   ClosePanelAndWait(panel->browser());
 }
+
+// Verify that the theme provider is properly plumbed through.
+TEST_F(PanelBrowserWindowCocoaTest, ThemeProvider) {
+  Panel* panel = CreateTestPanel("Test Panel");
+  ASSERT_TRUE(panel);
+
+  PanelBrowserWindowCocoa* native_window =
+      static_cast<PanelBrowserWindowCocoa*>(panel->native_panel());
+  ASSERT_TRUE(native_window);
+  EXPECT_TRUE(NULL != [[native_window->controller_ window] themeProvider]);
+  ClosePanelAndWait(panel->browser());
+}

[Dmitry Titov, 2011/08/31 01:01:30]

We also need a test now that verifies that titlebar is actually updated when
Panel->UpdateTitleBar is called.  you can pull it from native window.

[dcheng, 2011/08/31 23:58:03]

Done.