Add a full Blimp integration test.

blimp/client/support/compositor/blimp_embedder_compositor.cc

Index: blimp/client/support/compositor/blimp_embedder_compositor.cc
diff --git a/blimp/client/app/compositor/browser_compositor.cc b/blimp/client/support/compositor/blimp_embedder_compositor.cc
similarity index 82%
copy from blimp/client/app/compositor/browser_compositor.cc
copy to blimp/client/support/compositor/blimp_embedder_compositor.cc
index 81e278eb340cf6a64b55f072c62ca3d3497b5538..9b508ab2dbc1d361524be3e099bb78283c102bd2 100644
--- a/blimp/client/app/compositor/browser_compositor.cc
+++ b/blimp/client/support/compositor/blimp_embedder_compositor.cc
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "blimp/client/app/compositor/browser_compositor.h"
+#include "blimp/client/support/compositor/blimp_embedder_compositor.h"
 
 #include "base/bind.h"
 #include "base/lazy_instance.h"
@@ -67,12 +67,11 @@ base::LazyInstance<SimpleTaskGraphRunner> g_task_graph_runner =
 
 }  // namespace
 
-BrowserCompositor::BrowserCompositor(
+BlimpEmbedderCompositor::BlimpEmbedderCompositor(
     CompositorDependencies* compositor_dependencies)
     : compositor_dependencies_(compositor_dependencies),
       surface_id_allocator_(base::MakeUnique<cc::SurfaceIdAllocator>(
           compositor_dependencies->AllocateSurfaceClientId())),
-      widget_(gfx::kNullAcceleratedWidget),
       output_surface_request_pending_(false),
       root_layer_(cc::Layer::Create()) {
   compositor_dependencies_->GetSurfaceManager()->RegisterSurfaceClientId(
@@ -92,20 +91,22 @@ BrowserCompositor::BrowserCompositor(
   root_layer_->SetBackgroundColor(SK_ColorWHITE);
   host_->GetLayerTree()->SetRootLayer(root_layer_);
   host_->SetSurfaceClientId(surface_id_allocator_->client_id());
+  host_->SetVisible(true);
 }
 
-BrowserCompositor::~BrowserCompositor() {
+BlimpEmbedderCompositor::~BlimpEmbedderCompositor() {
+  SetContextProvider(nullptr);
   compositor_dependencies_->GetSurfaceManager()->InvalidateSurfaceClientId(
       surface_id_allocator_->client_id());
 }
 
-void BrowserCompositor::SetContentLayer(
+void BlimpEmbedderCompositor::SetContentLayer(
     scoped_refptr<cc::Layer> content_layer) {
   root_layer_->RemoveAllChildren();
   root_layer_->AddChild(content_layer);
 }
 
-void BrowserCompositor::SetSize(const gfx::Size& size_in_px) {
+void BlimpEmbedderCompositor::SetSize(const gfx::Size& size_in_px) {
   viewport_size_in_px_ = size_in_px;
 
   // Update the host.
@@ -118,20 +119,18 @@ void BrowserCompositor::SetSize(const gfx::Size& size_in_px) {
   }
 }
 
-void BrowserCompositor::SetAcceleratedWidget(gfx::AcceleratedWidget widget) {
-  // Kill all references to the old widget.
-  if (widget_ != gfx::kNullAcceleratedWidget) {
-    // We are always visible if we have a widget.
+void BlimpEmbedderCompositor::SetContextProvider(
+    scoped_refptr<cc::ContextProvider> context_provider) {
+  if (context_provider_) {
     DCHECK(host_->IsVisible());
     host_->SetVisible(false);
     host_->ReleaseOutputSurface();
     display_.reset();
   }
 
-  widget_ = gfx::kNullAcceleratedWidget;
+  context_provider_ = std::move(context_provider);
 
-  if (widget != gfx::kNullAcceleratedWidget) {
-    widget_ = widget;
+  if (context_provider_) {
     host_->SetVisible(true);
     if (output_surface_request_pending_) {
       HandlePendingOutputSurfaceRequest();
@@ -139,44 +138,35 @@ void BrowserCompositor::SetAcceleratedWidget(gfx::AcceleratedWidget widget) {
   }
 }
 
-void BrowserCompositor::RequestNewOutputSurface() {
+void BlimpEmbedderCompositor::RequestNewOutputSurface() {
   DCHECK(!output_surface_request_pending_)
       << "We already have a pending request?";
   output_surface_request_pending_ = true;
   HandlePendingOutputSurfaceRequest();
 }
 
-void BrowserCompositor::DidInitializeOutputSurface() {
+void BlimpEmbedderCompositor::DidInitializeOutputSurface() {
   output_surface_request_pending_ = false;
 }
 
-void BrowserCompositor::DidFailToInitializeOutputSurface() {
+void BlimpEmbedderCompositor::DidFailToInitializeOutputSurface() {
   NOTREACHED() << "Can't fail to initialize the OutputSurface here";
 }
 
-void BrowserCompositor::DidCompleteSwapBuffers() {
-  if (!did_complete_swap_buffers_.is_null()) {
-    did_complete_swap_buffers_.Run();
-  }
-}
-
-void BrowserCompositor::HandlePendingOutputSurfaceRequest() {
+void BlimpEmbedderCompositor::HandlePendingOutputSurfaceRequest() {
   DCHECK(output_surface_request_pending_);
 
   // Can't handle the request right now since we don't have a widget.
   if (!host_->IsVisible())
     return;
 
-  DCHECK_NE(gfx::kNullAcceleratedWidget, widget_);
+  DCHECK(context_provider_);
 
   gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager =
       compositor_dependencies_->GetGpuMemoryBufferManager();
 
-  scoped_refptr<cc::ContextProvider> context_provider =
-      BlimpContextProvider::Create(widget_, gpu_memory_buffer_manager);
-
   std::unique_ptr<cc::OutputSurface> display_output_surface =
-      base::MakeUnique<DisplayOutputSurface>(context_provider);
+      base::MakeUnique<DisplayOutputSurface>(context_provider_);
 
   auto* task_runner = base::ThreadTaskRunnerHandle::Get().get();
   std::unique_ptr<cc::SyntheticBeginFrameSource> begin_frame_source(
@@ -198,7 +188,7 @@ void BrowserCompositor::HandlePendingOutputSurfaceRequest() {
   std::unique_ptr<cc::OutputSurface> delegated_output_surface =
       base::MakeUnique<cc::SurfaceDisplayOutputSurface>(
           compositor_dependencies_->GetSurfaceManager(),
-          surface_id_allocator_.get(), display_.get(), context_provider,
+          surface_id_allocator_.get(), display_.get(), context_provider_,
           nullptr);
 
   host_->SetOutputSurface(std::move(delegated_output_surface));