Refactor themePatternPhase and tab_view in preparation for fixing crbug.com/176857

chrome/browser/ui/cocoa/chrome_browser_window.mm

Index: chrome/browser/ui/cocoa/chrome_browser_window.mm
diff --git a/chrome/browser/ui/cocoa/chrome_browser_window.mm b/chrome/browser/ui/cocoa/chrome_browser_window.mm
index 24e2623c445863f25798c9466fc4ef3ff46b6fb5..9855072b9d9a576b3084e6ef2d30a1a556f55173 100644
--- a/chrome/browser/ui/cocoa/chrome_browser_window.mm
+++ b/chrome/browser/ui/cocoa/chrome_browser_window.mm
@@ -24,11 +24,11 @@
   return [delegate themedWindowStyle];
 }
 
-- (NSPoint)themePatternPhase {
+- (NSPoint)themePatternPhaseForAlignment:(ThemePatternAlignment)alignment {
   id delegate = [self delegate];
-  if (![delegate respondsToSelector:@selector(themePatternPhase)])
+  if (![delegate respondsToSelector:@selector(themePatternPhaseForAlignment:)])
     return NSZeroPoint;
-  return [delegate themePatternPhase];
+  return [delegate themePatternPhaseForAlignment:alignment];
 }
 
 @end