Implement basic theming for panel titlebars.

chrome/browser/ui/panels/panel_window_controller_cocoa.mm

Index: chrome/browser/ui/panels/panel_window_controller_cocoa.mm
diff --git a/chrome/browser/ui/panels/panel_window_controller_cocoa.mm b/chrome/browser/ui/panels/panel_window_controller_cocoa.mm
index d48f204f791c34606f217a459d1b3d728ee1b427..cd0f6f0f64f09b5141f0bf49cc08dff26be546b1 100644
--- a/chrome/browser/ui/panels/panel_window_controller_cocoa.mm
+++ b/chrome/browser/ui/panels/panel_window_controller_cocoa.mm
@@ -9,7 +9,10 @@
 #include "base/logging.h"
 #include "base/mac/mac_util.h"
 #include "chrome/app/chrome_command_ids.h"  // IDC_*
+#include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/tabs/tab_strip_model.h"
+#include "chrome/browser/themes/theme_service.h"
+#include "chrome/browser/themes/theme_service_factory.h"
 #include "chrome/browser/ui/browser.h"
 #import "chrome/browser/ui/cocoa/event_utils.h"
 #import "chrome/browser/ui/cocoa/find_bar/find_bar_bridge.h"
@@ -32,6 +35,27 @@ const int kMinimumWindowSize = 1;
   return self;
 }
 
+- (ui::ThemeProvider*)themeProvider {
+  return ThemeServiceFactory::GetForProfile(windowShim_->browser()->profile());
+}
+
+- (ThemedWindowStyle)themedWindowStyle {
+  ThemedWindowStyle style = THEMED_POPUP;
+  if (windowShim_->browser()->profile()->IsOffTheRecord())
+    style |= THEMED_INCOGNITO;
+  return style;
+}
+
+- (NSPoint)themePatternPhase {
+  // TODO(dcheng): These constants and the following logic are duplicated from

[Dmitry Titov, 2011/08/27 20:30:58]

Lets just share this code in this patch the new util file that Jenn has created,
before it got any further out of sync.

[dcheng, 2011/08/31 00:05:04]

Done.

+  // BrowserWindowController. Determine if we need to share the code somehow or
+  // if we will always use the same constants as BrowserWindowController.
+  const CGFloat kPatternHorizontalOffset = -5;
+  const CGFloat kPatternVerticalOffset = 2;
+  NSView* windowView = [[[self window] contentView] superview];
+  return NSMakePoint(kPatternHorizontalOffset, windowView + kPatternVerticalOffset);
+}
+
 - (void)awakeFromNib {
   NSWindow* window = [self window];
 
@@ -93,7 +117,9 @@ const int kMinimumWindowSize = 1;
 
 - (void)addFindBar:(FindBarCocoaController*)findBarCocoaController {
   NSView* contentView = [[self window] contentView];
-  [contentView addSubview:[findBarCocoaController view]];
+  // Append as the last subview of the superview so that we can draw over our
+  // custom title bar, which draws over the native title bar.
+  [[contentView superview] addSubview:[findBarCocoaController view]];
 
   CGFloat maxY = NSMaxY([contentView frame]);
   CGFloat maxWidth = NSWidth([contentView frame]);