Broke out layout metric information from ViewsDelegate to LayoutProvider

chrome/browser/ui/views/harmony/harmony_layout_delegate.cc

-// Copyright 2016 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/views/harmony/harmony_layout_delegate.h"
-
-#include "base/lazy_instance.h"
-#include "base/logging.h"
-
-static base::LazyInstance<HarmonyLayoutDelegate>::DestructorAtExit
-    harmony_layout_delegate_ = LAZY_INSTANCE_INITIALIZER;
-
-// static
-HarmonyLayoutDelegate* HarmonyLayoutDelegate::Get() {
-  return harmony_layout_delegate_.Pointer();
-}
-
-int HarmonyLayoutDelegate::GetMetric(Metric metric) const {
-  switch (metric) {
-    case Metric::BUTTON_HORIZONTAL_PADDING:
-      return kHarmonyLayoutUnit;
-    case Metric::DIALOG_BUTTON_MARGIN:
-      return kHarmonyLayoutUnit;
-    case Metric::BUTTON_MAX_LINKABLE_WIDTH:
-      return kHarmonyLayoutUnit * 8;
-    case Metric::BUTTON_MINIMUM_WIDTH:
-    case Metric::DIALOG_BUTTON_MINIMUM_WIDTH:
-      // Minimum label size plus padding.
-      return 2 * kHarmonyLayoutUnit +
-             2 * GetMetric(Metric::BUTTON_HORIZONTAL_PADDING);
-    case Metric::DIALOG_BUTTON_TOP_SPACING:
-      return kHarmonyLayoutUnit;
-    case Metric::DIALOG_CLOSE_BUTTON_MARGIN: {
-      constexpr int kVisibleMargin = kHarmonyLayoutUnit / 2;
-      // The visible margin is based on the unpadded size, so to get the actual
-      // margin we need to subtract out the padding.
-      return kVisibleMargin - GetMetric(Metric::VECTOR_IMAGE_BUTTON_PADDING);
-    }
-    case Metric::PANEL_CONTENT_MARGIN:
-      return kHarmonyLayoutUnit;
-    case Metric::RELATED_BUTTON_HORIZONTAL_SPACING:
-      return kHarmonyLayoutUnit / 2;
-    case Metric::RELATED_CONTROL_HORIZONTAL_SPACING:
-      return kHarmonyLayoutUnit;
-    case Metric::RELATED_CONTROL_HORIZONTAL_SPACING_SMALL:
-      return kHarmonyLayoutUnit;
-    case Metric::RELATED_CONTROL_VERTICAL_SPACING:
-      return kHarmonyLayoutUnit / 2;
-    case Metric::RELATED_CONTROL_VERTICAL_SPACING_SMALL:
-      return kHarmonyLayoutUnit / 2;
-    case Metric::RELATED_LABEL_HORIZONTAL_SPACING:
-      return kHarmonyLayoutUnit;
-    case Metric::SUBSECTION_HORIZONTAL_INDENT:
-      return 0;
-    case Metric::UNRELATED_CONTROL_HORIZONTAL_SPACING:
-      return kHarmonyLayoutUnit;
-    case Metric::UNRELATED_CONTROL_HORIZONTAL_SPACING_LARGE:
-      return kHarmonyLayoutUnit;
-    case Metric::UNRELATED_CONTROL_VERTICAL_SPACING:
-      return kHarmonyLayoutUnit;
-    case Metric::UNRELATED_CONTROL_VERTICAL_SPACING_LARGE:
-      return kHarmonyLayoutUnit;
-    case Metric::VECTOR_IMAGE_BUTTON_PADDING:
-      return 4;
-  }
-  NOTREACHED();
-  return 0;
-}
-
-views::GridLayout::Alignment
-HarmonyLayoutDelegate::GetControlLabelGridAlignment() const {
-  return views::GridLayout::LEADING;
-}
-
-bool HarmonyLayoutDelegate::UseExtraDialogPadding() const {
-  return false;
-}
-
-bool HarmonyLayoutDelegate::ShouldShowWindowIcon() const {
-  return false;
-}
-
-bool HarmonyLayoutDelegate::IsHarmonyMode() const {
-  return true;
-}
-
-int HarmonyLayoutDelegate::GetDialogPreferredWidth(DialogWidth width) const {
-  switch (width) {
-    case DialogWidth::SMALL:
-      return 320;
-    case DialogWidth::MEDIUM:
-      return 448;
-    case DialogWidth::LARGE:
-      return 512;
-  }
-  NOTREACHED();
-  return 0;
-}
-
-const views::TypographyProvider& HarmonyLayoutDelegate::GetTypographyProvider()
-    const {
-  return typography_provider_;
-}