Mojo framework for AndroidOverlay.

content/browser/gpu/gpu_process_host.cc

Index: content/browser/gpu/gpu_process_host.cc
diff --git a/content/browser/gpu/gpu_process_host.cc b/content/browser/gpu/gpu_process_host.cc
index 4aabfd167311f7e7bd0ab2e5047601a811a3685a..c1ece2eb42e6d67945049e60633ffbefc2ccf65f 100644
--- a/content/browser/gpu/gpu_process_host.cc
+++ b/content/browser/gpu/gpu_process_host.cc
@@ -75,6 +75,9 @@
 
 #if defined(OS_ANDROID)
 #include "base/android/build_info.h"
+#include "content/public/browser/android/java_interfaces.h"
+#include "media/mojo/interfaces/android_overlay.mojom.h"
+#include "services/service_manager/public/cpp/interface_registry.h"
 #endif
 
 #if defined(OS_WIN)
@@ -318,6 +321,22 @@ void HostLoadedShader(int host_id,
 
 }  // anonymous namespace
 
+#if defined(OS_ANDROID)
+template <typename Interface>
+void BindJavaInterface(mojo::InterfaceRequest<Interface> request) {

[boliu, 2017/02/17 21:20:51]

if we end up creating a separate registry for gpu, then this could move to that
code

if not, I think gpu_process_host_ui_shim might be better, since that's like the
"UI" part of GpuProcessHost

[liberato (no reviews please), 2017/02/22 16:25:01]

moved to UI shim, per offline discussion.

+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+  content::GetGlobalJavaInterfaces()->GetInterface(std::move(request));
+}
+
+// Binder which posts each request to the UI thread.
+template <typename Interface>
+void BindJavaInterfaceOnUIThread(mojo::InterfaceRequest<Interface> request) {
+  BrowserThread::GetTaskRunnerForThread(BrowserThread::UI)
+      ->PostTask(FROM_HERE, base::Bind(&BindJavaInterface<Interface>,
+                                       base::Passed(&request)));
+}
+#endif
+
 class GpuProcessHost::ConnectionFilterImpl : public ConnectionFilter {
  public:
   ConnectionFilterImpl(GpuProcessHost* host) : host_(host) {}
@@ -332,6 +351,12 @@ class GpuProcessHost::ConnectionFilterImpl : public ConnectionFilter {
 
     GetContentClient()->browser()->ExposeInterfacesToGpuProcess(registry,
                                                                 host_);
+
+#if defined(OS_ANDROID)
+    registry->AddInterface(base::Bind(
+        &BindJavaInterfaceOnUIThread<media::mojom::AndroidOverlayProvider>));
+#endif
+
     return true;
   }