cocoa browser: remove non-material toolbar support

chrome/browser/ui/cocoa/toolbar/reload_button_cocoa.mm

Index: chrome/browser/ui/cocoa/toolbar/reload_button_cocoa.mm
diff --git a/chrome/browser/ui/cocoa/toolbar/reload_button_cocoa.mm b/chrome/browser/ui/cocoa/toolbar/reload_button_cocoa.mm
index 5adff27b035e0015e2f1f7e8562aff33567cfe0e..925bc4002ae740e119450c275ed69c2a6498256e 100644
--- a/chrome/browser/ui/cocoa/toolbar/reload_button_cocoa.mm
+++ b/chrome/browser/ui/cocoa/toolbar/reload_button_cocoa.mm
@@ -89,39 +89,8 @@ - (void)updateTag:(NSInteger)anInt {
 
   // Forcibly remove any stale tooltip which is being displayed.
   [self removeAllToolTips];
-  id cell = [self cell];
   [self setTag:anInt];
 
-  // The old way of doing things.
-  if (!ui::MaterialDesignController::IsModeMaterial()) {
-    if (anInt == IDC_RELOAD) {
-      [cell setImageID:IDR_RELOAD
-        forButtonState:image_button_cell::kDefaultState];
-      [cell setImageID:IDR_RELOAD_H
-        forButtonState:image_button_cell::kHoverState];
-      [cell setImageID:IDR_RELOAD_P
-        forButtonState:image_button_cell::kPressedState];
-      // The stop button has a disabled image but the reload button doesn't. To
-      // unset it we have to explicilty change the image ID to 0.
-      [cell setImageID:0
-        forButtonState:image_button_cell::kDisabledState];
-      [self setToolTip:l10n_util::GetNSStringWithFixup(IDS_TOOLTIP_RELOAD)];
-    } else if (anInt == IDC_STOP) {
-      [cell setImageID:IDR_STOP
-        forButtonState:image_button_cell::kDefaultState];
-      [cell setImageID:IDR_STOP_H
-        forButtonState:image_button_cell::kHoverState];
-      [cell setImageID:IDR_STOP_P
-        forButtonState:image_button_cell::kPressedState];
-      [cell setImageID:IDR_STOP_D
-        forButtonState:image_button_cell::kDisabledState];
-      [self setToolTip:l10n_util::GetNSStringWithFixup(IDS_TOOLTIP_STOP)];
-    } else {
-      NOTREACHED();
-    }
-    return;
-  }
-
   [self resetButtonStateImages];
   if (anInt == IDC_RELOAD) {
     [self setToolTip:l10n_util::GetNSStringWithFixup(IDS_TOOLTIP_RELOAD)];
@@ -154,28 +123,16 @@ - (void)setIsLoading:(BOOL)isLoading force:(BOOL)force {
   } else if ([self tag] == IDC_STOP &&
              !pendingReloadTimer_ &&
              [[self cell] isMouseInside]) {
-    id cell = [self cell];
-    if (ui::MaterialDesignController::IsModeMaterial()) {
-      [self resetButtonStateImages];
-      NSImage* disabledStopImage =
-          [[self cell] imageForState:image_button_cell::kDisabledState
-                                view:self];
-      [cell setImage:disabledStopImage
-          forButtonState:image_button_cell::kDefaultState];
-      [cell setImage:disabledStopImage
-          forButtonState:image_button_cell::kHoverState];
-      [cell setImage:disabledStopImage
-          forButtonState:image_button_cell::kPressedState];
-    } else {
-      [cell setImageID:IDR_STOP_D
+    [self resetButtonStateImages];
+    NSImage* disabledStopImage =
+        [[self cell] imageForState:image_button_cell::kDisabledState
+                              view:self];
+    [[self cell] setImage:disabledStopImage
         forButtonState:image_button_cell::kDefaultState];
-      [cell setImageID:IDR_STOP_D
-        forButtonState:image_button_cell::kDisabledState];
-      [cell setImageID:IDR_STOP_D
+    [[self cell] setImage:disabledStopImage
         forButtonState:image_button_cell::kHoverState];
-      [cell setImageID:IDR_STOP_D
+    [[self cell] setImage:disabledStopImage
         forButtonState:image_button_cell::kPressedState];
-    }
     pendingReloadTimer_ =
         [NSTimer timerWithTimeInterval:kPendingReloadTimeout
                                 target:self