[iOS][Dark Mode] Update Open In toolbar for dark mode

Bug: 996437
Change-Id: Ibc0331ad222e2cc3acb79915d3b85f9d3ab5af38
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1771969
Commit-Queue: Robbie Gibson <rkgibson@google.com>
Reviewed-by: Mark Cogan <marq@chromium.org>
Cr-Commit-Position: refs/heads/master@{#690756}

ios/chrome/app/resources/LaunchScreen.xib

 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="14845" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" colorMatched="YES">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="14854.2" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" colorMatched="YES">
     <device id="retina6_1" orientation="portrait" appearance="light"/>
     <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14799.2"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14806.4"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <objects>
@@ -33,7 +33,7 @@
                         </constraints>
                     </imageView>
                 </subviews>
-                <color key="backgroundColor" xcode11CocoaTouchSystemColor="systemBackgroundColor" cocoaTouchSystemColor="whiteColor"/>
+                <color key="backgroundColor" systemColor="systemBackgroundColor" cocoaTouchSystemColor="whiteColor"/>
                 <constraints>
                     <constraint firstItem="K7H-Iv-QNk" firstAttribute="width" secondItem="tRS-Cx-RH3" secondAttribute="width" multiplier="0.381966" id="3hJ-Yo-1Tg"/>
                     <constraint firstItem="K7H-Iv-QNk" firstAttribute="height" secondItem="tRS-Cx-RH3" secondAttribute="height" multiplier="0.381966" id="962-tL-cOd"/>

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

@@ -23,7 +23,7 @@ source_set("open_in") {
     "//ios/chrome/browser/ui/coordinators:chrome_coordinators",
     "//ios/chrome/browser/ui/util",
     "//ios/chrome/browser/web_state_list",
-    "//ios/chrome/common/ui_util",
+    "//ios/chrome/common/colors",
     "//ios/chrome/common/ui_util",
     "//ios/third_party/material_components_ios",
     "//ios/web/public",

ios/chrome/browser/ui/open_in/open_in_toolbar.mm

@@ -7,10 +7,10 @@
 #include <cmath>
 
 #include "base/logging.h"
-#import "ios/chrome/browser/ui/colors/MDCPalette+CrAdditions.h"
 #import "ios/chrome/browser/ui/util/named_guide.h"
 #include "ios/chrome/browser/ui/util/rtl_geometry.h"
 #import "ios/chrome/browser/ui/util/uikit_ui_util.h"
+#import "ios/chrome/common/colors/semantic_color_names.h"
 #import "ios/chrome/common/ui_util/constraints_ui_util.h"
 #include "ios/chrome/grit/ios_strings.h"
 #import "ios/third_party/material_components_ios/src/components/Buttons/src/MaterialButtons.h"
@@ -28,28 +28,17 @@ const CGFloat kOpenButtonTrailingPadding = 16.0f;
 
 // The toolbar's border related constants.
 const CGFloat kTopBorderHeight = 0.5f;
-const CGFloat kTopBorderTransparency = 0.13f;
-const int kTopBorderColor = 0x000000;
-
-// The toolbar's background related constants.
-const int kToolbarBackgroundColor = 0xFFFFFF;
-const CGFloat kToolbarBackgroundTransparency = 0.97f;
 
 }  // anonymous namespace
 
-@interface OpenInToolbar () {
-  // Backing object for |self.openButton|.
-  MDCButton* _openButton;
-  // Backing object for |self.topBorder|.
-  UIView* _topBorder;
-}
+@interface OpenInToolbar ()
 
 // The "Open in..." button that's hooked up with the target and action passed
 // on initialization.
-@property(nonatomic, retain, readonly) MDCButton* openButton;
+@property(nonatomic, strong, readonly) MDCButton* openButton;
 
 // The line used as the border at the top of the toolbar.
-@property(nonatomic, retain, readonly) UIView* topBorder;
+@property(nonatomic, strong, readonly) UIView* topBorder;
 
 // View used to have a bottom margin to prevent overlapping with the bottom
 // toolbar. This view is used because the the CRWWebControllerContainerView is
@@ -95,6 +84,8 @@ const CGFloat kToolbarBackgroundTransparency = 0.97f;
 
 @synthesize bottomMargin = _bottomMargin;
 @synthesize bottomMarginConstraint = _bottomMarginConstraint;
+@synthesize openButton = _openButton;
+@synthesize topBorder = _topBorder;
 
 - (instancetype)initWithFrame:(CGRect)aRect {
   NOTREACHED();
@@ -105,8 +96,7 @@ const CGFloat kToolbarBackgroundTransparency = 0.97f;
   self = [super initWithFrame:CGRectZero];
   if (self) {
     DCHECK([target respondsToSelector:action]);
-    [self setBackgroundColor:UIColorFromRGB(kToolbarBackgroundColor,
-                                            kToolbarBackgroundTransparency)];
+    self.backgroundColor = [UIColor colorNamed:kBackgroundColor];
     [self addSubview:self.openButton];
     [self.openButton addTarget:target
                         action:action
@@ -147,7 +137,7 @@ const CGFloat kToolbarBackgroundTransparency = 0.97f;
 - (MDCButton*)openButton {
   if (!_openButton) {
     _openButton = [[MDCFlatButton alloc] init];
-    [_openButton setTitleColor:[[MDCPalette cr_bluePalette] tint500]
+    [_openButton setTitleColor:[UIColor colorNamed:kBlueColor]
                       forState:UIControlStateNormal];
     [_openButton setTitle:l10n_util::GetNSStringWithFixup(IDS_IOS_OPEN_IN)
                  forState:UIControlStateNormal];
@@ -159,8 +149,7 @@ const CGFloat kToolbarBackgroundTransparency = 0.97f;
 - (UIView*)topBorder {
   if (!_topBorder) {
     _topBorder = [[UIView alloc] initWithFrame:CGRectZero];
-    [_topBorder setBackgroundColor:UIColorFromRGB(kTopBorderColor,
-                                                  kTopBorderTransparency)];
+    _topBorder.backgroundColor = [UIColor colorNamed:kToolbarShadowColor];
   }
   return _topBorder;
 }