Allow out-of-process iframes to render to compositing surfaces.

content/browser/frame_host/render_widget_host_view_child_frame_unittest.cc

 // Copyright 2014 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 "content/browser/frame_host/render_widget_host_view_child_frame.h"
 
 #include "base/basictypes.h"
 #include "base/message_loop/message_loop.h"
+#include "cc/surfaces/surface.h"
+#include "cc/surfaces/surface_factory.h"
+#include "cc/surfaces/surface_manager.h"
+#include "cc/surfaces/surface_sequence.h"
+#include "content/browser/compositor/test/no_transport_image_transport_factory.h"
+#include "content/browser/frame_host/cross_process_frame_connector.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/view_messages.h"
 #include "content/public/browser/render_widget_host_view.h"
 #include "content/public/test/mock_render_process_host.h"
 #include "content/public/test/test_browser_context.h"
 #include "content/test/test_render_view_host.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace content {
 namespace {
 class MockRenderWidgetHostDelegate : public RenderWidgetHostDelegate {
  public:
   MockRenderWidgetHostDelegate() {}
   ~MockRenderWidgetHostDelegate() override {}
 };
 
+class MockCrossProcessFrameConnector : public CrossProcessFrameConnector {
+ public:
+  MockCrossProcessFrameConnector()
+      : CrossProcessFrameConnector(nullptr),
+        last_scale_factor_received_(0.f),
+        received_delegated_frame_(false) {}
+  ~MockCrossProcessFrameConnector() override {}
+
+  void ChildFrameCompositorFrameSwapped(
+      uint32 output_surface_id,
+      int host_id,
+      int route_id,
+      scoped_ptr<cc::CompositorFrame> frame) override {
+    received_delegated_frame_ = true;
+    last_frame_size_received_ =
+        frame->delegated_frame_data->render_pass_list.back()
+            ->output_rect.size();
+    last_scale_factor_received_ = frame->metadata.device_scale_factor;
+  }
+
+  void SetChildFrameSurface(cc::SurfaceId& surface_id,
+                            gfx::Size frame_size,
+                            float scale_factor,
+                            cc::SurfaceSequence& sequence) override {
+    last_surface_id_received_ = surface_id;
+    last_frame_size_received_ = frame_size;
+    last_scale_factor_received_ = scale_factor;
+  }
+
+  cc::SurfaceId last_surface_id_received_;
+  gfx::Size last_frame_size_received_;
+  float last_scale_factor_received_;
+
+  bool received_delegated_frame_;
+};
+
+}  // namespace
+
 class RenderWidgetHostViewChildFrameTest : public testing::Test {
  public:
   RenderWidgetHostViewChildFrameTest() {}
 
   void SetUp() override {
     browser_context_.reset(new TestBrowserContext);
+
+// ImageTransportFactory doesn't exist on Android.
+#if !defined(OS_ANDROID)
+    ImageTransportFactory::InitializeForUnitTests(
+        scoped_ptr<ImageTransportFactory>(
+            new NoTransportImageTransportFactory));
+#endif
+
     MockRenderProcessHost* process_host =
         new MockRenderProcessHost(browser_context_.get());
     widget_host_ = new RenderWidgetHostImpl(
         &delegate_, process_host, MSG_ROUTING_NONE, false);
     view_ = new RenderWidgetHostViewChildFrame(widget_host_);
+
+    test_frame_connector_ = new MockCrossProcessFrameConnector();
+    view_->set_cross_process_frame_connector(test_frame_connector_);
   }
 
   void TearDown() override {
     if (view_)
       view_->Destroy();
     delete widget_host_;
+    delete test_frame_connector_;
 
     browser_context_.reset();
 
     message_loop_.DeleteSoon(FROM_HERE, browser_context_.release());
     message_loop_.RunUntilIdle();
+#if !defined(OS_ANDROID)
+    ImageTransportFactory::Terminate();
+#endif
   }
 
+  cc::SurfaceId surface_id() { return view_->surface_id_; }
+
  protected:
   base::MessageLoopForUI message_loop_;
   scoped_ptr<BrowserContext> browser_context_;
   MockRenderWidgetHostDelegate delegate_;
 
   // Tests should set these to NULL if they've already triggered their
   // destruction.
   RenderWidgetHostImpl* widget_host_;
   RenderWidgetHostViewChildFrame* view_;
+  MockCrossProcessFrameConnector* test_frame_connector_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewChildFrameTest);
 };
 
-}  // namespace
+scoped_ptr<cc::CompositorFrame> CreateDelegatedFrame(float scale_factor,
+                                                     gfx::Size size,
+                                                     gfx::Rect damage) {

[dcheng, 2015/05/28 22:16:30]

gfx::Rect should be passed a const ref.

[kenrb, 2015/05/29 19:29:36]

Done.

+  scoped_ptr<cc::CompositorFrame> frame(new cc::CompositorFrame);
+  frame->metadata.device_scale_factor = scale_factor;
+  frame->delegated_frame_data.reset(new cc::DelegatedFrameData);
+
+  scoped_ptr<cc::RenderPass> pass = cc::RenderPass::Create();
+  pass->SetNew(cc::RenderPassId(1, 1), gfx::Rect(size), damage,
+               gfx::Transform());
+  frame->delegated_frame_data->render_pass_list.push_back(pass.Pass());
+  return frame.Pass();

[dcheng, 2015/05/28 22:16:30]

This Pass() should be unnecessary due to NRVO.

[kenrb, 2015/05/29 19:29:36]

Done.

+}
 
 TEST_F(RenderWidgetHostViewChildFrameTest, VisibilityTest) {
   view_->Show();
   ASSERT_TRUE(view_->IsShowing());
 
   view_->Hide();
   ASSERT_FALSE(view_->IsShowing());
 }
 
+//

[ncarter (slow), 2015/05/28 22:32:52]

//

[kenrb, 2015/05/29 19:29:36]

Missing test description added.

+TEST_F(RenderWidgetHostViewChildFrameTest, SwapCompositorFrame) {
+  gfx::Size view_size(100, 100);
+  gfx::Rect view_rect(view_size);
+  float scale_factor = 1.f;
+
+  view_->SetSize(view_size);
+  view_->Show();
+
+  view_->OnSwapCompositorFrame(
+      0, CreateDelegatedFrame(scale_factor, view_size, view_rect));
+
+  if (UseSurfacesEnabled()) {
+    cc::SurfaceId id = surface_id();
+    if (!id.is_null()) {
+#if !defined(OS_ANDROID)
+      ImageTransportFactory* factory = ImageTransportFactory::GetInstance();
+      cc::SurfaceManager* manager = factory->GetSurfaceManager();
+      cc::Surface* surface = manager->GetSurfaceForId(id);
+      EXPECT_TRUE(surface);
+      // There should be a SurfaceSequence created by the RWHVChildFrame.
+      EXPECT_EQ(1u, surface->GetDestructionDependencyCount());
+#endif
+
+      // Surface ID should have been passed to CrossProcessFrameConnector to
+      // be sent to the embedding renderer.
+      EXPECT_EQ(id, test_frame_connector_->last_surface_id_received_);
+      EXPECT_EQ(view_size, test_frame_connector_->last_frame_size_received_);
+      EXPECT_EQ(scale_factor,
+                test_frame_connector_->last_scale_factor_received_);
+    }
+  } else {
+    EXPECT_TRUE(test_frame_connector_->received_delegated_frame_);
+    EXPECT_EQ(view_size, test_frame_connector_->last_frame_size_received_);
+    EXPECT_EQ(scale_factor, test_frame_connector_->last_scale_factor_received_);
+  }
+}
+
 }  // namespace content