[Mac] Organize all tab/tab strip files into chrome/browser/ui/cocoa/tabs/....

chrome/browser/ui/cocoa/side_tab_strip_view.mm

-// Copyright (c) 2010 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 "chrome/browser/ui/cocoa/side_tab_strip_view.h"
-
-#include "base/scoped_nsobject.h"
-#import "third_party/GTM/AppKit/GTMNSColor+Luminance.h"
-
-@implementation SideTabStripView
-
-- (void)drawBorder:(NSRect)bounds {
-  // Draw a border on the right side.
-  NSRect borderRect, contentRect;
-  NSDivideRect(bounds, &borderRect, &contentRect, 1, NSMaxXEdge);
-  [[NSColor colorWithCalibratedWhite:0.0 alpha:0.2] set];
-  NSRectFillUsingOperation(borderRect, NSCompositeSourceOver);
-}
-
-// Override to prevent double-clicks from minimizing the window. The side
-// tab strip doesn't have that behavior (since it's in the window content
-// area).
-- (BOOL)doubleClickMinimizesWindow {
-  return NO;
-}
-
-- (void)drawRect:(NSRect)rect {
-  // BOOL isKey = [[self window] isKeyWindow];
-  NSColor* aColor =
-      [NSColor colorWithCalibratedRed:0.506 green:0.660 blue:0.985 alpha:1.000];
-  NSColor* bColor =
-      [NSColor colorWithCalibratedRed:0.099 green:0.140 blue:0.254 alpha:1.000];
-  scoped_nsobject<NSGradient> gradient(
-      [[NSGradient alloc] initWithStartingColor:aColor endingColor:bColor]);
-
-  NSRect gradientRect = [self bounds];
-  [gradient drawInRect:gradientRect angle:270.0];
-
-  // Draw borders and any drop feedback.
-  [super drawRect:rect];
-}
-
-@end