Don't use drag to corner resizing for unresizable windows

ash/wm/workspace/multi_window_resize_controller_unittest.cc

Index: ash/wm/workspace/multi_window_resize_controller_unittest.cc
diff --git a/ash/wm/workspace/multi_window_resize_controller_unittest.cc b/ash/wm/workspace/multi_window_resize_controller_unittest.cc
index e528438c54ecb1882d7f80093bef04eabdce9ed1..96ea0cd0648fbf2ca459a4c3073b10964ceb6c4d 100644
--- a/ash/wm/workspace/multi_window_resize_controller_unittest.cc
+++ b/ash/wm/workspace/multi_window_resize_controller_unittest.cc
@@ -10,6 +10,7 @@
 #include "ash/wm/workspace_controller.h"
 #include "ash/wm/workspace_controller_test_helper.h"
 #include "ash/wm/workspace/workspace_event_handler_test_helper.h"
+#include "ui/aura/client/aura_constants.h"
 #include "ui/aura/test/event_generator.h"
 #include "ui/aura/test/test_window_delegate.h"
 #include "ui/aura/window.h"
@@ -126,6 +127,24 @@ TEST_F(MultiWindowResizeControllerTest, BasicTests) {
   EXPECT_FALSE(HasPendingHide());
 }
 
+// Make sure that a non resizable window has no impact.
+TEST_F(MultiWindowResizeControllerTest, NonResizableTest) {
+  aura::test::TestWindowDelegate delegate1;
+  scoped_ptr<aura::Window> w1(
+      CreateTestWindow(&delegate1, gfx::Rect(0, 0, 100, 100)));
+  delegate1.set_window_component(HTRIGHT);
+  aura::test::TestWindowDelegate delegate2;
+  scoped_ptr<aura::Window> w2(
+      CreateTestWindow(&delegate2, gfx::Rect(100, 0, 100, 100)));
+  delegate2.set_window_component(HTRIGHT);
+  w2->SetProperty(aura::client::kCanResizeKey, false);
+  aura::test::EventGenerator generator(w1->GetRootWindow());
+  generator.MoveMouseTo(99, 50);
+  EXPECT_FALSE(HasPendingShow());
+  EXPECT_FALSE(IsShowing());
+  EXPECT_FALSE(HasPendingHide());
+}
+
 // Makes sure deleting a window hides.
 TEST_F(MultiWindowResizeControllerTest, DeleteWindow) {
   aura::test::TestWindowDelegate delegate1;