[Signin][Android][UI] Adjust dark account picker |expand more| icon

This CL adjusts the account picker |expand more| icon in dark mode
according to the UI mock.

Bug: 1107383
Change-Id: I90532fee7b9bd12884e0a4f36c91b6eb17e55665
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2320168Reviewed-by: Theresa  <twellington@chromium.org>
Commit-Queue: Alice Wang <aliceywang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#793682}

chrome/android/java/res/drawable/ic_expand_more_in_circle_24dp.xml

@@ -11,9 +11,9 @@
   <path
       android:strokeWidth="1"
       android:pathData="M23.5,11.9999C23.5,18.3512 18.3513,23.4999 12,23.4999C5.6487,23.4999 0.5,18.3512 0.5,11.9999C0.5,5.6486 5.6487,0.4999 12,0.4999C18.3513,0.4999 23.5,5.6486 23.5,11.9999Z"
-      android:strokeColor="@color/default_chip_outline_color_light"/>
+      android:strokeColor="@color/hairline_stroke_color"/>
   <path
       android:pathData="M12.5892,14.7487C12.4383,14.9039 12.23,14.9999 12,14.9999C11.77,14.9999 11.5617,14.9039 11.4108,14.7487L7.2442,10.463C7.0933,10.3079 7,10.0936 7,9.857C7,9.3839 7.3733,8.9999 7.8333,8.9999C8.0633,8.9999 8.2717,9.0959 8.4225,9.251L12,12.9307L15.5775,9.251C15.7283,9.0959 15.9367,8.9999 16.1667,8.9999C16.6267,8.9999 17,9.3839 17,9.857C17,10.0936 16.9067,10.3079 16.7558,10.463L12.5892,14.7487Z"
-      android:fillColor="@color/default_chip_outline_color_dark"
+      android:fillColor="@color/default_control_color_normal"
       android:fillType="evenOdd"/>
 </vector>

chrome/android/javatests/src/org/chromium/chrome/browser/signin/AccountPickerBottomSheetTest.java

@@ -38,6 +38,7 @@ import org.chromium.base.test.util.Feature;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.flags.ChromeFeatureList;
 import org.chromium.chrome.browser.flags.ChromeSwitches;
+import org.chromium.chrome.browser.night_mode.ChromeNightModeTestUtils;
 import org.chromium.chrome.browser.signin.account_picker.AccountPickerBottomSheetCoordinator;
 import org.chromium.chrome.browser.signin.account_picker.AccountPickerDelegate;
 import org.chromium.chrome.test.ChromeJUnit4ClassRunner;
@@ -130,6 +131,18 @@ public class AccountPickerBottomSheetTest {
                 mCoordinator.getBottomSheetViewForTesting(), "collapsed_sheet_with_account");
     }
 
+    @Test
+    @MediumTest
+    @Feature("RenderTest")
+    public void testCollapsedSheetWithAccountViewDarkMode() throws IOException {
+        TestThreadUtils.runOnUiThreadBlocking(
+                () -> { ChromeNightModeTestUtils.setUpNightModeForChromeActivity(true); });
+        mRenderTestRule.setNightModeEnabled(true);
+        buildAndShowCollapsedBottomSheet();
+        mRenderTestRule.render(
+                mCoordinator.getBottomSheetViewForTesting(), "collapsed_sheet_with_account_dark");
+    }
+
     @Test
     @MediumTest
     public void testExpandedSheet() {

ui/android/java/res/values-night/colors.xml

@@ -40,6 +40,7 @@
     <color name="ripple_color_blue">@color/ripple_color_blue_light</color>
 
     <!-- Colors used for Widgets (checkboxes, switches, buttons, etc)-->
+    <color name="default_control_color_normal">@color/default_control_color_normal_dark</color>
     <color name="default_control_color_active">@color/default_control_color_active_dark</color>
 
     <!-- Chip colors -->

ui/android/java/res/values/semantic_colors_adaptive.xml

@@ -74,6 +74,7 @@
     <color name="ripple_color_blue">@color/ripple_color_blue_dark</color>
 
     <!-- Colors used for Widgets (checkboxes, switches, buttons, etc)-->
+    <color name="default_control_color_normal" tools:ignore="UnusedResources">@color/default_control_color_normal_light</color>
     <color name="default_control_color_active" tools:ignore="UnusedResources">@color/default_control_color_active_light</color>
 
     <!-- Chip colors -->