mac: ensure ui::Compositor exists for visible RWHVs

content/browser/renderer_host/render_widget_host_view_mac_editcommand_helper_unittest.mm

 // 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.
 
 #import "content/browser/renderer_host/render_widget_host_view_mac_editcommand_helper.h"
 
 #import <Cocoa/Cocoa.h>
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/mac/scoped_nsautorelease_pool.h"
 #include "base/message_loop/message_loop.h"
 #include "content/browser/compositor/test/no_transport_image_transport_factory.h"
 #include "content/browser/gpu/compositor_util.h"
 #include "content/browser/renderer_host/render_widget_host_delegate.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/common/input_messages.h"
 #include "content/public/test/mock_render_process_host.h"
 #include "content/public/test/test_browser_context.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
+#include "ui/accelerated_widget_mac/window_resize_helper_mac.h"
 #include "ui/base/layout.h"
 
 using content::RenderWidgetHostViewMac;
 
 // Bare bones obj-c class for testing purposes.
 @interface RenderWidgetHostViewMacEditCommandHelperTestClass : NSObject
 @end
 
 @implementation RenderWidgetHostViewMacEditCommandHelperTestClass
 @end
@@ skipping 93 matching lines @@
   supported_factors.push_back(ui::SCALE_FACTOR_100P);
   ui::test::ScopedSetSupportedScaleFactors scoped_supported(supported_factors);
 
   int32_t routing_id = process_host.GetNextRoutingID();
   RenderWidgetHostEditCommandCounter* render_widget =
       new RenderWidgetHostEditCommandCounter(&delegate, &process_host,
                                              routing_id);
 
   base::mac::ScopedNSAutoreleasePool pool;
 
+  base::MessageLoop message_loop;
+  ui::WindowResizeHelperMac::Get()->Init(
+    base::MessageLoop::current()->task_runner());
+
   // Owned by its |cocoa_view()|, i.e. |rwhv_cocoa|.
   RenderWidgetHostViewMac* rwhv_mac = new RenderWidgetHostViewMac(
       render_widget, false);
   base::scoped_nsobject<RenderWidgetHostViewCocoa> rwhv_cocoa(
       [rwhv_mac->cocoa_view() retain]);
 
   RenderWidgetHostViewMacEditCommandHelper helper;
   NSArray* edit_command_strings = helper.GetEditSelectorNames();
   RenderWidgetHostViewMacOwner* rwhwvm_owner =
       [[[RenderWidgetHostViewMacOwner alloc]
           initWithRenderWidgetHostViewMac:rwhv_mac] autorelease];
 
   helper.AddEditingSelectorsToClass([rwhwvm_owner class]);
 
   for (NSString* edit_command_name in edit_command_strings) {
     NSString* sel_str = [edit_command_name stringByAppendingString:@":"];
     [rwhwvm_owner performSelector:NSSelectorFromString(sel_str) withObject:nil];
   }
 
   size_t num_edit_commands = [edit_command_strings count];
   EXPECT_EQ(render_widget->edit_command_message_count_, num_edit_commands);
   rwhv_cocoa.reset();
   pool.Recycle();
 
-  {
-    // The |render_widget|'s process needs to be deleted within |message_loop|.
-    base::MessageLoop message_loop;
-    delete render_widget;
-  }
+  // The |render_widget|'s process needs to be deleted within |message_loop|.
+  delete render_widget;
 }
 
 // Test RenderWidgetHostViewMacEditCommandHelper::AddEditingSelectorsToClass
 TEST_F(RenderWidgetHostViewMacEditCommandHelperTest,
        TestAddEditingSelectorsToClass) {
   RenderWidgetHostViewMacEditCommandHelper helper;
   NSArray* edit_command_strings = helper.GetEditSelectorNames();
   ASSERT_GT([edit_command_strings count], 0U);
 
   // Create a class instance and add methods to the class.
@@ skipping 31 matching lines @@
 
   // Random selectors should be enabled by the function.
   SEL garbage_selector = NSSelectorFromString(@"randomGarbageSelector:");
   ASSERT_FALSE(helper.IsMenuItemEnabled(garbage_selector, rwhvm_owner));
 
   // TODO(jeremy): Currently IsMenuItemEnabled just returns true for all edit
   // selectors.  Once we go past that we should do more extensive testing here.
 }
 
 }  // namespace content