Several background pattern fixes on the Mac....

chrome/browser/cocoa/tab_cell.mm

-// Copyright (c) 2009 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.
-
-#import "base/scoped_nsobject.h"
-#import "chrome/browser/cocoa/tab_cell.h"
-#import "third_party/GTM/AppKit/GTMTheme.h"
-#import "third_party/GTM/AppKit/GTMNSColor+Luminance.h"
-
-
-@implementation TabCell
-
-- (id)initTextCell:(NSString *)aString {
-  self = [super initTextCell:aString];
-  if (self != nil) {
-    // nothing for now...
-  }
-  return self;
-}
-
-- (NSBackgroundStyle)interiorBackgroundStyle {
-  return [[[self controlView] gtm_theme]
-          interiorBackgroundStyleForStyle:GTMThemeStyleToolBar
-          state:GTMThemeStateActiveWindow];
-}
-
-// Override drawing the button so that it looks like a Chromium tab instead
-// of just a normal MacOS button.
-- (void)drawWithFrame:(NSRect)cellFrame inView:(NSView *)controlView {
-  // Inset where the text is drawn to keep it away from the sloping edges of the
-  // tab, the close box, and the icon view. These constants are derived
-  // empirically as the cell doesn't know about the surrounding view objects.
-  // TODO(pinkerton/alcor): Fix this somehow?
-  const int kIconXOffset = 28;
-  const int kCloseBoxXOffset = 21;
-  NSRect frame = NSOffsetRect(cellFrame, kIconXOffset, 0);
-  frame.size.width -= kCloseBoxXOffset + kIconXOffset;
-  [self drawInteriorWithFrame:frame
-                       inView:controlView];
-}
-
-- (void)drawInteriorWithFrame:(NSRect)cellFrame inView:(NSView *)controlView {
-  GTMTheme* theme = [[self controlView] gtm_theme];
-  NSColor* textColor = [theme textColorForStyle:GTMThemeStyleToolBar
-                                          state:[self isHighlighted]];
-
-  scoped_nsobject<NSShadow> textShadow([[NSShadow alloc] init]);
-  [textShadow setShadowBlurRadius:0.0f];
-  [textShadow.get() setShadowColor:[textColor gtm_legibleTextColor]];
-  [textShadow.get() setShadowOffset:NSMakeSize(0.0f, -1.0f)];
-
-  NSDictionary* attributes =
-      [NSDictionary dictionaryWithObjectsAndKeys:
-        [self font], NSFontAttributeName,
-        textColor, NSForegroundColorAttributeName,
-        textShadow.get(), NSShadowAttributeName,
-       nil];
-
- [[self title] drawInRect:[self titleRectForBounds:cellFrame]
-           withAttributes:attributes];
-
-  NSRect imageBounds = NSZeroRect;
-  imageBounds.size = [[self image] size];
-  [[self image] drawInRect:[self imageRectForBounds:cellFrame]
-                  fromRect:imageBounds
-                 operation:NSCompositeSourceOver
-                  fraction:1.0];
-}
-
-- (void)highlight:(BOOL)flag
-        withFrame:(NSRect)cellFrame
-           inView:(NSView *)controlView {
-  // Don't do normal highlighting
-}
-
-@end