[Mac] Organize all infobar files into chrome/browser/ui/cocoa/infobars/....

chrome/browser/ui/cocoa/infobar_gradient_view.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.
-
-#include "chrome/browser/ui/cocoa/infobar_gradient_view.h"
-
-#include "base/scoped_nsobject.h"
-#import "chrome/browser/themes/browser_theme_provider.h"
-#import "chrome/browser/ui/cocoa/themed_window.h"
-
-namespace {
-
-const double kBackgroundColorTop[3] =
-    {255.0 / 255.0, 242.0 / 255.0, 183.0 / 255.0};
-const double kBackgroundColorBottom[3] =
-    {250.0 / 255.0, 230.0 / 255.0, 145.0 / 255.0};
-}
-
-@implementation InfoBarGradientView
-
-- (id)initWithFrame:(NSRect)frameRect {
-  if ((self = [super initWithFrame:frameRect])) {
-    NSColor* startingColor =
-        [NSColor colorWithCalibratedRed:kBackgroundColorTop[0]
-                                  green:kBackgroundColorTop[1]
-                                   blue:kBackgroundColorTop[2]
-                                  alpha:1.0];
-    NSColor* endingColor =
-        [NSColor colorWithCalibratedRed:kBackgroundColorBottom[0]
-                                  green:kBackgroundColorBottom[1]
-                                   blue:kBackgroundColorBottom[2]
-                                  alpha:1.0];
-    scoped_nsobject<NSGradient> gradient(
-        [[NSGradient alloc] initWithStartingColor:startingColor
-                                       endingColor:endingColor]);
-    [self setGradient:gradient];
-  }
-  return self;
-}
-
-- (NSColor*)strokeColor {
-  ThemeProvider* themeProvider = [[self window] themeProvider];
-  if (!themeProvider)
-    return [NSColor blackColor];
-
-  BOOL active = [[self window] isMainWindow];
-  return themeProvider->GetNSColor(
-      active ? BrowserThemeProvider::COLOR_TOOLBAR_STROKE :
-               BrowserThemeProvider::COLOR_TOOLBAR_STROKE_INACTIVE,
-      true);
-}
-
-- (BOOL)mouseDownCanMoveWindow {
-  return NO;
-}
-
-// This view is intentionally not opaque because it overlaps with the findbar.
-
-- (BOOL)accessibilityIsIgnored {
-  return NO;
-}
-
-- (id)accessibilityAttributeValue:(NSString*)attribute {
-  if ([attribute isEqual:NSAccessibilityRoleAttribute])
-    return NSAccessibilityGroupRole;
-
-  return [super accessibilityAttributeValue:attribute];
-}
-
-@end