Clean up touch_bar_util

GetBlueTouchBarButton() is unused; remove it.

Remove the wrapper functions that return the touchbar classes.
Chrome builds with a new enough SDK that they are not needed.

Bug: none
Change-Id: I19d25a92ce857b1bcced66b8905a22faf701da7e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2459398
Auto-Submit: Avi Drissman <avi@chromium.org>
Commit-Queue: Leonard Grey <lgrey@chromium.org>
Reviewed-by: Leonard Grey <lgrey@chromium.org>
Cr-Commit-Position: refs/heads/master@{#815140}

chrome/browser/ui/cocoa/touchbar/browser_window_default_touch_bar.mm

@@ -304,7 +304,7 @@ class API_AVAILABLE(macos(10.12.2)) TouchBarNotificationBridge
     return [self createTabFullscreenTouchBar];
   }
 
-  base::scoped_nsobject<NSTouchBar> touchBar([[ui::NSTouchBar() alloc] init]);
+  base::scoped_nsobject<NSTouchBar> touchBar([[NSTouchBar alloc] init]);
   [touchBar
       setCustomizationIdentifier:ui::GetTouchBarId(kBrowserWindowTouchBarId)];
   [touchBar setDelegate:self];
@@ -359,7 +359,7 @@ class API_AVAILABLE(macos(10.12.2)) TouchBarNotificationBridge
   }
 
   base::scoped_nsobject<NSCustomTouchBarItem> touchBarItem(
-      [[ui::NSCustomTouchBarItem() alloc] initWithIdentifier:identifier]);
+      [[NSCustomTouchBarItem alloc] initWithIdentifier:identifier]);
   if ([identifier hasSuffix:kBackTouchId]) {
     auto* button = CreateTouchBarButton(vector_icons::kBackArrowIcon, self,
                                         IDC_BACK, IDS_ACCNAME_BACK);
@@ -443,7 +443,7 @@ class API_AVAILABLE(macos(10.12.2)) TouchBarNotificationBridge
 }
 
 - (NSTouchBar*)createTabFullscreenTouchBar {
-  base::scoped_nsobject<NSTouchBar> touchBar([[ui::NSTouchBar() alloc] init]);
+  base::scoped_nsobject<NSTouchBar> touchBar([[NSTouchBar alloc] init]);
   [touchBar setDelegate:self];
   [touchBar setDefaultItemIdentifiers:@[ ui::GetTouchBarItemId(
                                           kTabFullscreenTouchBarId,

chrome/browser/ui/cocoa/touchbar/credit_card_autofill_touch_bar_controller.mm

@@ -69,7 +69,7 @@ NSImage* GetCreditCardTouchBarImage(int iconId) {
     return nil;
   }
 
-  base::scoped_nsobject<NSTouchBar> touchBar([[ui::NSTouchBar() alloc] init]);
+  base::scoped_nsobject<NSTouchBar> touchBar([[NSTouchBar alloc] init]);
   [touchBar setCustomizationIdentifier:ui::GetTouchBarId(
                                            kCreditCardAutofillTouchBarId)];
   [touchBar setDelegate:self];
@@ -97,13 +97,13 @@ NSImage* GetCreditCardTouchBarImage(int iconId) {
                                                kCreditCardTouchId),
                          i];
     base::scoped_nsobject<NSCustomTouchBarItem> item(
-        [[ui::NSCustomTouchBarItem() alloc] initWithIdentifier:cardIdentifier]);
+        [[NSCustomTouchBarItem alloc] initWithIdentifier:cardIdentifier]);
     [item setView:[self createCreditCardButtonAtRow:i]];
     [creditCardItems addObject:item.autorelease()];
   }
 
-  return [ui::NSGroupTouchBarItem() groupItemWithIdentifier:identifier
-                                                      items:creditCardItems];
+  return [NSGroupTouchBarItem groupItemWithIdentifier:identifier
+                                                items:creditCardItems];
 }
 
 - (NSColor*)touchBarSubtextColor {

ui/base/cocoa/touch_bar_util.h

@@ -31,21 +31,6 @@ enum TouchBarAction {
 // Logs the sample's UMA metrics into the DefaultTouchBar.Metrics histogram.
 COMPONENT_EXPORT(UI_BASE) void LogTouchBarUMA(TouchBarAction command);
 
-// Returns the NSTouchBar Class.
-COMPONENT_EXPORT(UI_BASE) Class NSTouchBar();
-
-// Returns the NSCustomTouchBarItem Class.
-COMPONENT_EXPORT(UI_BASE) Class NSCustomTouchBarItem();
-
-// Returns the NSGroupTouchBarItem Class.
-COMPONENT_EXPORT(UI_BASE) Class NSGroupTouchBarItem();
-
-// Returns a stylized blue button for the touch bar. The button performs
-// |action| from the |target|.
-API_AVAILABLE(macosx(10.12.2))
-COMPONENT_EXPORT(UI_BASE)
-NSButton* GetBlueTouchBarButton(NSString* title, id target, SEL action);
-
 // Creates a touch bar identifier with the given |id|.
 COMPONENT_EXPORT(UI_BASE) NSString* GetTouchBarId(NSString* touch_bar_id);
 

ui/base/cocoa/touch_bar_util.mm

@@ -15,28 +15,6 @@ void LogTouchBarUMA(TouchBarAction command) {
                             TOUCH_BAR_ACTION_COUNT);
 }
 
-Class NSTouchBar() {
-  return NSClassFromString(@"NSTouchBar");
-}
-
-Class NSCustomTouchBarItem() {
-  return NSClassFromString(@"NSCustomTouchBarItem");
-}
-
-Class NSGroupTouchBarItem() {
-  return NSClassFromString(@"NSGroupTouchBarItem");
-}
-
-NSButton* GetBlueTouchBarButton(NSString* title, id target, SEL action) {
-  NSButton* button =
-      [NSButton buttonWithTitle:title target:target action:action];
-  [button setBezelColor:[NSColor colorWithSRGBRed:0.168
-                                            green:0.51
-                                             blue:0.843
-                                            alpha:1.0]];
-  return button;
-}
-
 NSString* GetTouchBarId(NSString* touch_bar_id) {
   NSString* chrome_bundle_id =
       base::SysUTF8ToNSString(base::mac::BaseBundleID());