[MacViews] Implement size constraints for app windows.

chrome/browser/ui/cocoa/apps/native_app_window_cocoa_browsertest.mm

Index: chrome/browser/ui/cocoa/apps/native_app_window_cocoa_browsertest.mm
diff --git a/chrome/browser/ui/cocoa/apps/native_app_window_cocoa_browsertest.mm b/chrome/browser/ui/cocoa/apps/native_app_window_cocoa_browsertest.mm
index 3992b5f43cdf629dddcae3215d33a6d62e4956bc..bd4858c29a10e86625d10d17847560604e1b4b55 100644
--- a/chrome/browser/ui/cocoa/apps/native_app_window_cocoa_browsertest.mm
+++ b/chrome/browser/ui/cocoa/apps/native_app_window_cocoa_browsertest.mm
@@ -240,3 +240,49 @@ IN_PROC_BROWSER_TEST_F(NativeAppWindowCocoaBrowserTest, Frameless) {
 
   CloseAppWindow(app_window);
 }
+
+// Test that resize and fullscreen controls are correctly enabled/disabled.
+IN_PROC_BROWSER_TEST_F(NativeAppWindowCocoaBrowserTest, Controls) {
+  extensions::AppWindow* app_window = CreateTestAppWindow("{}");
+  NSWindow* ns_window = app_window->GetNativeWindow();
+
+  // The window is resizable.
+  EXPECT_TRUE([ns_window styleMask] & NSResizableWindowMask);
+  if (base::mac::IsOSSnowLeopard())
+    EXPECT_TRUE([ns_window showsResizeIndicator]);
+
+  // The window can fullscreen and maximize.
+  if (base::mac::IsOSLionOrLater())
+    EXPECT_TRUE([ns_window collectionBehavior] &
+                NSWindowCollectionBehaviorFullScreenPrimary);
+  EXPECT_TRUE([[ns_window standardWindowButton:NSWindowZoomButton] isEnabled]);
+
+  // Set a maximum size.
+  app_window->SetContentSizeConstraints(gfx::Size(), gfx::Size(200, 201));
+  EXPECT_EQ(200, [ns_window frame].size.width);
+  EXPECT_EQ(201, [ns_window frame].size.height);
+  EXPECT_EQ(200, [ns_window contentMaxSize].width);
+  EXPECT_EQ(201, [ns_window contentMaxSize].height);
+
+  // Still resizable.
+  EXPECT_TRUE([ns_window styleMask] & NSResizableWindowMask);
+  if (base::mac::IsOSSnowLeopard())
+    EXPECT_TRUE([ns_window showsResizeIndicator]);
+
+  // Fullscreen and maximize are disabled.
+  if (base::mac::IsOSLionOrLater())
+    EXPECT_FALSE([ns_window collectionBehavior] &
+                 NSWindowCollectionBehaviorFullScreenPrimary);
+  EXPECT_FALSE([[ns_window standardWindowButton:NSWindowZoomButton] isEnabled]);
+
+  // Set a minimum size equal to the maximum size.
+  app_window->SetContentSizeConstraints(gfx::Size(200, 201),
+                                        gfx::Size(200, 201));
+  EXPECT_EQ(200, [ns_window contentMinSize].width);
+  EXPECT_EQ(201, [ns_window contentMinSize].height);
+
+  // No longer resizable.
+  EXPECT_FALSE([ns_window styleMask] & NSResizableWindowMask);
+  if (base::mac::IsOSSnowLeopard())
+    EXPECT_FALSE([ns_window showsResizeIndicator]);
+}