[ios] Move TopAlignedImageView to c/b/ui/elements

TopAlignedImageView was previously only used in TabGrid. It will now
also be used when adding a black/white placeholder when a tab is evicted.

This CL moves the files so that it can be imported by another directory
in the future.

Change-Id: Idb7692f95192befafc2d0cdb0966df800a10fddc
Reviewed-on: https://chromium-review.googlesource.com/c/1448520
Reviewed-by: edchin <[email protected]>
Reviewed-by: Mark Cogan <[email protected]>
Commit-Queue: edchin <[email protected]>
Cr-Commit-Position: refs/heads/master@{#628353}

Author: edx246

ios/chrome/browser/ui/elements/BUILD.gn

@@ -12,6 +12,8 @@ source_set("elements") {
     "selector_picker_view_controller.h",
     "selector_picker_view_controller.mm",
     "selector_view_controller_delegate.h",
+    "top_aligned_image_view.h",
+    "top_aligned_image_view.mm",
   ]
   deps = [
     "//base",

ios/chrome/browser/ui/tab_grid/grid/top_aligned_image_view.h renamed to ios/chrome/browser/ui/elements/top_aligned_image_view.h

@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef IOS_CHROME_BROWSER_UI_TAB_GRID_GRID_TOP_ALIGNED_IMAGE_VIEW_H_
-#define IOS_CHROME_BROWSER_UI_TAB_GRID_GRID_TOP_ALIGNED_IMAGE_VIEW_H_
+#ifndef IOS_CHROME_BROWSER_UI_ELEMENTS_TOP_ALIGNED_IMAGE_VIEW_H_
+#define IOS_CHROME_BROWSER_UI_ELEMENTS_TOP_ALIGNED_IMAGE_VIEW_H_
 
 #import <UIKit/UIKit.h>
 
@@ -19,4 +19,4 @@
 - (instancetype)initWithCoder:(NSCoder*)aDecoder NS_UNAVAILABLE;
 @end
 
-#endif  // IOS_CHROME_BROWSER_UI_TAB_GRID_GRID_TOP_ALIGNED_IMAGE_VIEW_H_
+#endif  // IOS_CHROME_BROWSER_UI_ELEMENTS_TOP_ALIGNED_IMAGE_VIEW_H_

ios/chrome/browser/ui/tab_grid/grid/top_aligned_image_view.mm renamed to ios/chrome/browser/ui/elements/top_aligned_image_view.mm

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#import "ios/chrome/browser/ui/tab_grid/grid/top_aligned_image_view.h"
+#import "ios/chrome/browser/ui/elements/top_aligned_image_view.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."

ios/chrome/browser/ui/tab_grid/grid/BUILD.gn

@@ -21,8 +21,6 @@ source_set("grid_ui") {
     "grid_theme.h",
     "grid_view_controller.h",
     "grid_view_controller.mm",
-    "top_aligned_image_view.h",
-    "top_aligned_image_view.mm",
   ]
 
   configs += [ "//build/config/compiler:enable_arc" ]
@@ -32,6 +30,7 @@ source_set("grid_ui") {
     "//base",
     "//ios/chrome/app/strings",
     "//ios/chrome/browser",
+    "//ios/chrome/browser/ui/elements",
     "//ios/chrome/browser/ui/tab_grid/transitions",
     "//ios/chrome/browser/ui/util",
     "//ios/chrome/common/ui_util",

ios/chrome/browser/ui/tab_grid/grid/grid_cell.mm

@@ -5,8 +5,8 @@
 #import "ios/chrome/browser/ui/tab_grid/grid/grid_cell.h"
 
 #include "base/logging.h"
+#import "ios/chrome/browser/ui/elements/top_aligned_image_view.h"
 #import "ios/chrome/browser/ui/tab_grid/grid/grid_constants.h"
-#import "ios/chrome/browser/ui/tab_grid/grid/top_aligned_image_view.h"
 #import "ios/chrome/browser/ui/util/uikit_ui_util.h"
 #include "ios/chrome/grit/ios_strings.h"
 #include "ui/base/l10n/l10n_util.h"

ios/showcase/tab_grid/BUILD.gn

@@ -17,6 +17,7 @@ source_set("tab_grid") {
   ]
   deps = [
     "//base",
+    "//ios/chrome/browser/ui/elements",
     "//ios/chrome/browser/ui/tab_grid:tab_grid_ui",
     "//ios/chrome/browser/ui/tab_grid/grid:grid_ui",
     "//ios/showcase/common",

ios/showcase/tab_grid/sc_image_view_controller.mm

@@ -4,7 +4,7 @@
 
 #import "ios/showcase/tab_grid/sc_image_view_controller.h"
 
-#import "ios/chrome/browser/ui/tab_grid/grid/top_aligned_image_view.h"
+#import "ios/chrome/browser/ui/elements/top_aligned_image_view.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."