Simplify WorkAreaBounds access logic

ash/wm/workspace/workspace_window_resizer_unittest.cc

Index: ash/wm/workspace/workspace_window_resizer_unittest.cc
diff --git a/ash/wm/workspace/workspace_window_resizer_unittest.cc b/ash/wm/workspace/workspace_window_resizer_unittest.cc
index 67f29fb2fb1c290940c0a9dc4c69c1270027e64d..0afdf3ed7e87b5a182c32846e1fe59d06601638d 100644
--- a/ash/wm/workspace/workspace_window_resizer_unittest.cc
+++ b/ash/wm/workspace/workspace_window_resizer_unittest.cc
@@ -939,6 +939,8 @@ TEST_F(WorkspaceWindowResizerTest, TestProperSizerResolutions) {
   scoped_ptr<SnapSizer> resizer(new SnapSizer(
       window_.get(), gfx::Point(), SnapSizer::LEFT_EDGE));
   ASSERT_TRUE(resizer.get());
+  Shell::GetInstance()->shelf()->SetAutoHideBehavior(
+      SHELF_AUTO_HIDE_BEHAVIOR_NEVER);
   gfx::Rect rect = resizer->GetTargetBoundsForSize(0);
   EXPECT_EQ("0,0 720x552", rect.ToString());
   rect = resizer->GetTargetBoundsForSize(1);
@@ -947,6 +949,16 @@ TEST_F(WorkspaceWindowResizerTest, TestProperSizerResolutions) {
   EXPECT_EQ("0,0 720x552", rect.ToString());
   rect = resizer->GetTargetBoundsForSize(3);
   EXPECT_EQ("0,0 640x552", rect.ToString());
+  Shell::GetInstance()->shelf()->SetAutoHideBehavior(
+      SHELF_AUTO_HIDE_BEHAVIOR_ALWAYS);
+  rect = resizer->GetTargetBoundsForSize(0);
+  EXPECT_EQ("0,0 720x597", rect.ToString());
+  rect = resizer->GetTargetBoundsForSize(1);
+  EXPECT_EQ("0,0 720x597", rect.ToString());
+  rect = resizer->GetTargetBoundsForSize(2);
+  EXPECT_EQ("0,0 720x597", rect.ToString());
+  rect = resizer->GetTargetBoundsForSize(3);
+  EXPECT_EQ("0,0 640x597", rect.ToString());
 }
 
 // Verifies that a dragged window will restore to its pre-maximized size.