Add InProcessContextProvider and update InProcessCommandBuffer

blimp/client/app/compositor/browser_compositor.cc

Index: blimp/client/app/compositor/browser_compositor.cc
diff --git a/blimp/client/app/compositor/browser_compositor.cc b/blimp/client/app/compositor/browser_compositor.cc
index 9aa4811f00fa3a66668a73229962dad310ca36fb..c87d52cd44b0917dafb777afc8dc0c5287997dce 100644
--- a/blimp/client/app/compositor/browser_compositor.cc
+++ b/blimp/client/app/compositor/browser_compositor.cc
@@ -7,6 +7,7 @@
 #include "blimp/client/public/compositor/compositor_dependencies.h"
 #include "blimp/client/support/compositor/blimp_context_provider.h"
 #include "cc/output/context_provider.h"
+#include "gpu/ipc/common/gpu_surface_tracker.h"
 
 namespace blimp {
 namespace client {
@@ -15,14 +16,22 @@ BrowserCompositor::BrowserCompositor(
     CompositorDependencies* compositor_dependencies)
     : BlimpEmbedderCompositor(compositor_dependencies) {}
 
-BrowserCompositor::~BrowserCompositor() = default;
+BrowserCompositor::~BrowserCompositor() {
+  if (surface_handle_ != gpu::kNullSurfaceHandle) {
+    gpu::GpuSurfaceTracker::Get()->RemoveSurface(surface_handle_);
+  }
+}
 
 void BrowserCompositor::SetAcceleratedWidget(gfx::AcceleratedWidget widget) {
   scoped_refptr<cc::ContextProvider> provider;
 
   if (widget != gfx::kNullAcceleratedWidget) {
+    DCHECK_EQ(gpu::kNullSurfaceHandle, surface_handle_);
+    surface_handle_ =
+        gpu::GpuSurfaceTracker::Get()->AddSurfaceForNativeWidget(widget);
     provider = BlimpContextProvider::Create(
-        widget, compositor_dependencies()->GetGpuMemoryBufferManager());
+        surface_handle_,
+        compositor_dependencies()->GetGpuMemoryBufferManager());
   }
 
   SetContextProvider(std::move(provider));