[Reland] Enable AutoResize for Constrained Web Dialogs for Mac.

chrome/browser/ui/cocoa/constrained_window/constrained_window_mac_browsertest.mm

Index: chrome/browser/ui/cocoa/constrained_window/constrained_window_mac_browsertest.mm
diff --git a/chrome/browser/ui/cocoa/constrained_window/constrained_window_mac_browsertest.mm b/chrome/browser/ui/cocoa/constrained_window/constrained_window_mac_browsertest.mm
index 8e6cedab97c2fa0af12b5d380dd5d67d514e8279..d8ffb1edbffe80586e7324468e51fa4683d2d53f 100644
--- a/chrome/browser/ui/cocoa/constrained_window/constrained_window_mac_browsertest.mm
+++ b/chrome/browser/ui/cocoa/constrained_window/constrained_window_mac_browsertest.mm
@@ -79,14 +79,15 @@ class ConstrainedWindowMacTest : public InProcessBrowserTest {
 IN_PROC_BROWSER_TEST_F(ConstrainedWindowMacTest, ShowInInactiveTab) {
   // Show dialog in non active tab.
   NiceMock<ConstrainedWindowDelegateMock> delegate;
-  ConstrainedWindowMac dialog(&delegate, tab0_, sheet_);
+  std::unique_ptr<ConstrainedWindowMac> dialog(
+      CreateAndShowWebModalDialogMac(&delegate, tab0_, sheet_));
   EXPECT_EQ(0.0, [sheet_window_ alphaValue]);
 
   // Switch to inactive tab.
   browser()->tab_strip_model()->ActivateTabAt(0, true);
   EXPECT_EQ(1.0, [sheet_window_ alphaValue]);
 
-  dialog.CloseWebContentsModalDialog();
+  dialog->CloseWebContentsModalDialog();
 }
 
 // If a tab has never been shown then the associated tab view for the web
@@ -105,7 +106,8 @@ IN_PROC_BROWSER_TEST_F(ConstrainedWindowMacTest, ShowInUninitializedTab) {
 
   // Show dialog and verify that it's not visible yet.
   NiceMock<ConstrainedWindowDelegateMock> delegate;
-  ConstrainedWindowMac dialog(&delegate, tab2, sheet_);
+  std::unique_ptr<ConstrainedWindowMac> dialog(
+      CreateAndShowWebModalDialogMac(&delegate, tab2, sheet_));
   EXPECT_FALSE([sheet_window_ isVisible]);
 
   // Activate the tab and verify that the constrained window is shown.
@@ -114,25 +116,27 @@ IN_PROC_BROWSER_TEST_F(ConstrainedWindowMacTest, ShowInUninitializedTab) {
   EXPECT_TRUE([sheet_window_ isVisible]);
   EXPECT_EQ(1.0, [sheet_window_ alphaValue]);
 
-  dialog.CloseWebContentsModalDialog();
+  dialog->CloseWebContentsModalDialog();
 }
 
 // Test that adding a sheet disables tab dragging.
 IN_PROC_BROWSER_TEST_F(ConstrainedWindowMacTest, TabDragging) {
   NiceMock<ConstrainedWindowDelegateMock> delegate;
-  ConstrainedWindowMac dialog(&delegate, tab1_, sheet_);
+  std::unique_ptr<ConstrainedWindowMac> dialog(
+      CreateAndShowWebModalDialogMac(&delegate, tab1_, sheet_));
 
   // Verify that the dialog disables dragging.
   EXPECT_TRUE([controller_ isTabDraggable:tab_view0_]);
   EXPECT_FALSE([controller_ isTabDraggable:tab_view1_]);
 
-  dialog.CloseWebContentsModalDialog();
+  dialog->CloseWebContentsModalDialog();
 }
 
 // Test that closing a browser window with a sheet works.
 IN_PROC_BROWSER_TEST_F(ConstrainedWindowMacTest, BrowserWindowClose) {
   NiceMock<ConstrainedWindowDelegateMock> delegate;
-  ConstrainedWindowMac dialog(&delegate, tab1_, sheet_);
+  std::unique_ptr<ConstrainedWindowMac> dialog(
+      CreateAndShowWebModalDialogMac(&delegate, tab1_, sheet_));
   EXPECT_EQ(1.0, [sheet_window_ alphaValue]);
 
   // Close the browser window.
@@ -146,7 +150,8 @@ IN_PROC_BROWSER_TEST_F(ConstrainedWindowMacTest, BrowserWindowClose) {
 // Test that closing a tab with a sheet works.
 IN_PROC_BROWSER_TEST_F(ConstrainedWindowMacTest, TabClose) {
   NiceMock<ConstrainedWindowDelegateMock> delegate;
-  ConstrainedWindowMac dialog(&delegate, tab1_, sheet_);
+  std::unique_ptr<ConstrainedWindowMac> dialog(
+      CreateAndShowWebModalDialogMac(&delegate, tab1_, sheet_));
   EXPECT_EQ(1.0, [sheet_window_ alphaValue]);
 
   // Close the tab.
@@ -160,7 +165,8 @@ IN_PROC_BROWSER_TEST_F(ConstrainedWindowMacTest, TabClose) {
 // Test that the sheet is still visible after entering and exiting fullscreen.
 IN_PROC_BROWSER_TEST_F(ConstrainedWindowMacTest, BrowserWindowFullscreen) {
   NiceMock<ConstrainedWindowDelegateMock> delegate;
-  ConstrainedWindowMac dialog(&delegate, tab1_, sheet_);
+  std::unique_ptr<ConstrainedWindowMac> dialog(
+      CreateAndShowWebModalDialogMac(&delegate, tab1_, sheet_));
   EXPECT_EQ(1.0, [sheet_window_ alphaValue]);
 
   // Toggle fullscreen twice: one for entering and one for exiting.
@@ -180,5 +186,5 @@ IN_PROC_BROWSER_TEST_F(ConstrainedWindowMacTest, BrowserWindowFullscreen) {
     EXPECT_EQ(1.0, [sheet_window_ alphaValue]);
   }
 
-  dialog.CloseWebContentsModalDialog();
+  dialog->CloseWebContentsModalDialog();
 }