Fix the misalignment on CrOS of the tab background images

chrome/browser/ui/cocoa/browser_window_controller.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_CONTROLLER_H_
 
 // A class acting as the Objective-C controller for the Browser
 // object. Handles interactions between Cocoa and the cross-platform
 // code. Each window has a single toolbar and, by virtue of being a
@@ skipping 303 matching lines @@
 
 // Shows or hides the docked web inspector depending on |contents|'s state.
 - (void)updateDevToolsForContents:(content::WebContents*)contents;
 
 // Gets the current theme provider.
 - (ui::ThemeProvider*)themeProvider;
 
 // Gets the window style.
 - (ThemedWindowStyle)themedWindowStyle;
 
-// Gets the pattern phase for the window.
-- (NSPoint)themePatternPhase;
+// Returns the pattern phase for |alignment|. If the window does not have a tab
+// strip, the phase for THEME_PATTERN_ALIGN_WITH_FRAME is always returned.
+- (NSPoint)themePatternPhaseForAlignment:(ThemePatternAlignment)alignment;
 
 // Return the point to which a bubble window's arrow should point, in window
 // coordinates.
 - (NSPoint)bookmarkBubblePoint;
 
 // Returns the frame, in Cocoa (unflipped) screen coordinates, of the area where
 // Instant results are.  If Instant is not showing, returns the frame of where
 // it would be.
 - (NSRect)instantFrame;
 
@@ skipping 161 matching lines @@
 - (FullscreenExitBubbleController*)fullscreenExitBubbleController;
 
 // Gets the rect, in window base coordinates, that the omnibox popup should be
 // positioned relative to.
 - (NSRect)omniboxPopupAnchorRect;
 
 @end  // @interface BrowserWindowController (TestingAPI)
 
 
 #endif  // CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_CONTROLLER_H_