[Ash] Only snap windows that can maximize.

ash/wm/workspace/workspace_window_resizer_unittest.cc

 // Copyright (c) 2012 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.
 
 #include "ash/wm/workspace/workspace_window_resizer.h"
 
 #include "ash/display/display_manager.h"
 #include "ash/root_window_controller.h"
 #include "ash/screen_util.h"
 #include "ash/shelf/shelf_layout_manager.h"
@@ skipping 538 matching lines @@
 TEST_F(WorkspaceWindowResizerTest, Edge) {
   if (!SupportsHostWindowResize())
     return;
 
   // Resize host window to force insets update.
   UpdateDisplay("800x700");
   // TODO(varkha): Insets are reset after every drag because of
   // http://crbug.com/292238.
   // Window is wide enough not to get docked right away.
   window_->SetBounds(gfx::Rect(20, 30, 400, 60));
+  window_->SetProperty(aura::client::kCanMaximizeKey, true);
   wm::WindowState* window_state = wm::GetWindowState(window_.get());
 
   {
     gfx::Rect expected_bounds_in_parent(
         wm::GetDefaultLeftSnappedWindowBoundsInParent(window_.get()));
 
     scoped_ptr<WindowResizer> resizer(CreateResizerForTest(
         window_.get(), gfx::Point(), HTCAPTION));
     ASSERT_TRUE(resizer.get());
     resizer->Drag(CalculateDragPoint(*resizer, 0, 10), 0);
@@ skipping 839 matching lines @@
   scoped_ptr<WindowResizer> resizer(CreateResizerForTest(
       window_.get(), gfx::Point(), HTLEFT));
   ASSERT_TRUE(resizer.get());
   resizer->Drag(CalculateDragPoint(*resizer, 0, 0), 0);
   EXPECT_EQ("99,200 21x30", window_->bounds().ToString());
 }
 
 // Test that the user user moved window flag is getting properly set.
 TEST_F(WorkspaceWindowResizerTest, CheckUserWindowManagedFlags) {
   window_->SetBounds(gfx::Rect( 0,  50, 400, 200));
+  window_->SetProperty(aura::client::kCanMaximizeKey, true);
 
   std::vector<aura::Window*> no_attached_windows;
   // Check that an abort doesn't change anything.
   {
     scoped_ptr<WindowResizer> resizer(CreateResizerForTest(
         window_.get(), gfx::Point(), HTCAPTION));
     ASSERT_TRUE(resizer.get());
     // Move it 100 to the bottom.
     resizer->Drag(CalculateDragPoint(*resizer, 0, 100), 0);
     EXPECT_EQ("0,150 400x200", window_->bounds().ToString());
@@ skipping 450 matching lines @@
   // Drag even more to snap to the edge.
   generator.GestureScrollSequence(gfx::Point(400, kRootHeight - 40),
                                   gfx::Point(400, kRootHeight - 25),
                                   base::TimeDelta::FromMilliseconds(10),
                                   5);
   EXPECT_EQ(gfx::Rect(100, 100, 600, kRootHeight - 100).ToString(),
             touch_resize_window_->bounds().ToString());
 }
 
 }  // namespace ash