Revert of [Mac][Material Design] Bring Omnibox stroke and MD colors up to spec.

chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_cell.mm

 // Copyright (c) 2012 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.
 
 #import "chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_cell.h"
 
 #include <stddef.h>
 
 #include "base/logging.h"
 #include "base/mac/foundation_util.h"
@@ skipping 333 matching lines @@
   [[self backgroundColor] set];
   if (isPopupMode_) {
     NSRectFillUsingOperation(NSInsetRect(frame, 1, 1), NSCompositeSourceOver);
   } else {
     [path fill];
   }
 
   // Draw the border.
   if (isModeMaterial) {
     if (!inDarkMode) {
-      const CGFloat kNormalStrokeGray = 168 / 255.;
-      [[NSColor colorWithCalibratedWhite:kNormalStrokeGray alpha:1] set];
+      [[NSColor colorWithCalibratedWhite:168 / 255. alpha:1] set];
+      [path stroke];
     } else {
-      const CGFloat k30PercentAlpha = 0.3;
-      [[NSColor colorWithCalibratedWhite:0 alpha:k30PercentAlpha] set];
+      // In dark mode the top, middle, and bottom portions of the stroke are
+      // drawn in different colors.
+      {
+        gfx::ScopedNSGraphicsContextSaveGState saveState;
+        [[NSColor colorWithCalibratedWhite:52 / 255. alpha:1] set];
+        [NSBezierPath clipRect:NSMakeRect(NSMinX(frame), NSMaxY(frame) - 2,
+                                          NSWidth(frame), 2)];
+        [path stroke];
+      }
+      {
+        gfx::ScopedNSGraphicsContextSaveGState saveState;
+        [[NSColor colorWithCalibratedWhite:61 / 255. alpha:1] set];
+        [NSBezierPath clipRect:NSMakeRect(NSMinX(frame), NSMinY(frame) + 3,
+                                          NSWidth(frame), NSHeight(frame) - 5)];
+        [path stroke];
+      }
+      {
+        gfx::ScopedNSGraphicsContextSaveGState saveState;
+        [[NSColor colorWithCalibratedWhite:71 / 255. alpha:1] set];
+        [NSBezierPath clipRect:NSMakeRect(NSMinX(frame), NSMinY(frame),
+                                          NSWidth(frame), 3)];
+        [path stroke];
+      }
+
+      // Draw a highlight beneath the top edge, and a shadow beneath the bottom
+      // edge when on a Retina screen.
+      {
+        gfx::ScopedNSGraphicsContextSaveGState saveState;
+        [NSBezierPath setDefaultLineWidth:singlePixelLineWidth_];
+
+        [[NSColor colorWithCalibratedWhite:120 / 255. alpha:1] set];
+        NSPoint origin = NSMakePoint(NSMinX(pathRect) + 3,
+                                     NSMinY(pathRect) + singlePixelLineWidth_);
+        NSPoint destination =
+            NSMakePoint(NSMaxX(pathRect) - 3,
+                        NSMinY(pathRect) + singlePixelLineWidth_);
+        [NSBezierPath strokeLineFromPoint:origin
+                                  toPoint:destination];
+
+        if (singlePixelLineWidth_ < 1) {
+          origin.y = destination.y = NSMaxY(pathRect) + singlePixelLineWidth_;
+          [[AutocompleteTextField shadowColor] set];
+          [NSBezierPath strokeLineFromPoint:origin
+                                    toPoint:destination];
+        }
+      }
     }
-    [path stroke];
   } else {
     ui::DrawNinePartImage(frame,
                           isPopupMode_ ? kPopupBorderImageIds
                                        : kNormalBorderImageIds,
                           NSCompositeSourceOver,
                           1.0,
                           true);
   }
 
   // Draw the interior contents. We do this after drawing the border as some
@@ skipping 366 matching lines @@
 
 - (void)handleFocusEvent:(NSEvent*)event
                   ofView:(AutocompleteTextField*)controlView {
   if ([controlView observer]) {
     const bool controlDown = ([event modifierFlags] & NSControlKeyMask) != 0;
     [controlView observer]->OnSetFocus(controlDown);
   }
 }
 
 @end