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diff --git a/chrome/browser/cocoa/styled_text_field_cell_unittest.mm b/chrome/browser/cocoa/styled_text_field_cell_unittest.mm
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+++ b/chrome/browser/cocoa/styled_text_field_cell_unittest.mm
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+// Copyright (c) 2009 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 <Cocoa/Cocoa.h>
+
+#include "base/scoped_nsobject.h"
+#import "chrome/browser/cocoa/styled_text_field_cell.h"
+#import "chrome/browser/cocoa/styled_text_field_test_helper.h"
+#import "chrome/browser/cocoa/cocoa_test_helper.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/platform_test.h"
+
+namespace {
+
+// Width of the field so that we don't have to ask |field_| for it all
+// the time.
+const CGFloat kWidth(300.0);
+
+class StyledTextFieldCellTest : public CocoaTest {
+ public:
+  StyledTextFieldCellTest() {
+    // Make sure this is wide enough to play games with the cell
+    // decorations.
+    const NSRect frame = NSMakeRect(0, 0, kWidth, 30);
+
+    scoped_nsobject<StyledTextFieldTestCell> cell(
+        [[StyledTextFieldTestCell alloc] initTextCell:@"Testing"]);
+    cell_ = cell.get();
+    [cell_ setEditable:YES];
+    [cell_ setBordered:YES];
+
+    scoped_nsobject<NSTextField> view(
+        [[NSTextField alloc] initWithFrame:frame]);
+    view_ = view.get();
+    [view_ setCell:cell_];
+
+    [[test_window() contentView] addSubview:view_];
+  }
+
+  //CocoaTestHelper cocoa_helper_;  // Inits Cocoa, creates window, etc...
+  NSTextField* view_;
+  StyledTextFieldTestCell* cell_;
+};
+
+// Basic view tests (AddRemove, Display).
+TEST_VIEW(StyledTextFieldCellTest, view_);
+
+// Test drawing, mostly to ensure nothing leaks or crashes.
+TEST_F(StyledTextFieldCellTest, FocusedDisplay) {
+  [view_ display];
+
+  // Test focused drawing.
+  [test_window() makePretendKeyWindowAndSetFirstResponder:view_];
+  [view_ display];
+  [test_window() clearPretendKeyWindowAndFirstResponder];
+
+  // Test display of various cell configurations.
+  [cell_ setLeftMargin:5];
+  [view_ display];
+
+  [cell_ setRightMargin:15];
+  [view_ display];
+}
+
+// The editor frame should be slightly inset from the text frame.
+TEST_F(StyledTextFieldCellTest, DrawingRectForBounds) {
+  const NSRect bounds = [view_ bounds];
+  NSRect textFrame = [cell_ textFrameForFrame:bounds];
+  NSRect drawingRect = [cell_ drawingRectForBounds:bounds];
+
+  EXPECT_FALSE(NSIsEmptyRect(drawingRect));
+  EXPECT_TRUE(NSContainsRect(textFrame, NSInsetRect(drawingRect, 1, 1)));
+
+  // Save the starting frame for after clear.
+  const NSRect originalDrawingRect = drawingRect;
+
+  [cell_ setLeftMargin:10];
+  textFrame = [cell_ textFrameForFrame:bounds];
+  drawingRect = [cell_ drawingRectForBounds:bounds];
+  EXPECT_FALSE(NSIsEmptyRect(drawingRect));
+  EXPECT_TRUE(NSContainsRect(textFrame, NSInsetRect(drawingRect, 1, 1)));
+
+  [cell_ setRightMargin:20];
+  textFrame = [cell_ textFrameForFrame:bounds];
+  drawingRect = [cell_ drawingRectForBounds:bounds];
+  EXPECT_FALSE(NSIsEmptyRect(drawingRect));
+  EXPECT_TRUE(NSContainsRect(NSInsetRect(textFrame, 1, 1), drawingRect));
+
+  [cell_ setLeftMargin:0];
+  textFrame = [cell_ textFrameForFrame:bounds];
+  drawingRect = [cell_ drawingRectForBounds:bounds];
+  EXPECT_FALSE(NSIsEmptyRect(drawingRect));
+  EXPECT_TRUE(NSContainsRect(NSInsetRect(textFrame, 1, 1), drawingRect));
+}
+
+}  // namespace