[Fuchsia][EME] Origin provision

Origin provision is handled by FuchsiaCdmManager. It makes sure we only
send one provision request to provisioning server for the required
origin. All the other requests will be cached to wait for the current
provision to be finished.

Bug: 966191
Test: Shaka Player WV audio only test (with other CLs).
Change-Id: I95aa9e15783c3efb4842a0b1a7e808b24b023a0b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1737069
Commit-Queue: Yuchen Liu <yucliu@chromium.org>
Reviewed-by: Sergey Ulanov <sergeyu@chromium.org>
Reviewed-by: Xiaohan Wang <xhwang@chromium.org>
Reviewed-by: John Rummell <jrummell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#685018}

fuchsia/engine/BUILD.gn

@@ -88,6 +88,7 @@ component("web_engine_core") {
     "//skia/public/mojom",
     "//third_party/blink/public/common",
     "//third_party/fuchsia-sdk/sdk:web",
+    "//third_party/widevine/cdm:headers",
     "//ui/aura",
     "//ui/base/ime",
     "//ui/display",

fuchsia/engine/browser/DEPS

@@ -13,6 +13,7 @@ include_rules = [
   "+third_party/blink/public/common/logging",
   "+third_party/blink/public/common/messaging",
   "+third_party/blink/public/mojom/messaging",
+  "+third_party/widevine/cdm",
   "+ui/aura",
   "+ui/base/ime",
   "+ui/display",

fuchsia/engine/browser/web_engine_cdm_service.cc

@@ -8,14 +8,17 @@
 #include <string>
 
 #include "base/bind.h"
+#include "base/fuchsia/service_directory_client.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/frame_service_base.h"
 #include "content/public/browser/provision_fetcher_factory.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/storage_partition.h"
 #include "media/base/provision_fetcher.h"
+#include "media/fuchsia/cdm/service/fuchsia_cdm_manager.h"
 #include "media/fuchsia/mojom/fuchsia_cdm_provider.mojom.h"
+#include "third_party/widevine/cdm/widevine_cdm_common.h"
 
 namespace {
 class FuchsiaCdmProviderImpl
@@ -76,15 +79,48 @@ void BindFuchsiaCdmProvider(media::FuchsiaCdmManager* cdm_manager,
                           std::move(loader_factory)),
       frame_host, std::move(request));
 }
+
+class WidevineHandler : public media::FuchsiaCdmManager::KeySystemHandler {
+ public:
+  WidevineHandler() = default;
+  ~WidevineHandler() override = default;
+
+  void CreateCdm(
+      fidl::InterfaceRequest<fuchsia::media::drm::ContentDecryptionModule>
+          request) override {
+    auto widevine = base::fuchsia::ServiceDirectoryClient::ForCurrentProcess()
+                        ->ConnectToService<fuchsia::media::drm::Widevine>();
+    widevine->CreateContentDecryptionModule(std::move(request));
+  }
+
+  fuchsia::media::drm::ProvisionerPtr CreateProvisioner() override {
+    fuchsia::media::drm::ProvisionerPtr provisioner;
+
+    auto widevine = base::fuchsia::ServiceDirectoryClient::ForCurrentProcess()
+                        ->ConnectToService<fuchsia::media::drm::Widevine>();
+    widevine->CreateProvisioner(provisioner.NewRequest());
+
+    return provisioner;
+  }
+};
+
+// Supported key systems:
+std::unique_ptr<media::FuchsiaCdmManager> CreateCdmManager() {
+  media::FuchsiaCdmManager::KeySystemHandlerMap handlers;
+  handlers.emplace(kWidevineKeySystem, std::make_unique<WidevineHandler>());
+
+  return std::make_unique<media::FuchsiaCdmManager>(std::move(handlers));
+}
 }  // namespace
 
 WebEngineCdmService::WebEngineCdmService(
     service_manager::BinderRegistryWithArgs<content::RenderFrameHost*>*
         registry)
-    : registry_(registry) {
+    : cdm_manager_(CreateCdmManager()), registry_(registry) {
+  DCHECK(cdm_manager_);
   DCHECK(registry_);
   registry_->AddInterface(
-      base::BindRepeating(&BindFuchsiaCdmProvider, &cdm_manager_));
+      base::BindRepeating(&BindFuchsiaCdmProvider, cdm_manager_.get()));
 }
 
 WebEngineCdmService::~WebEngineCdmService() {

fuchsia/engine/browser/web_engine_cdm_service.h

@@ -5,13 +5,18 @@
 #ifndef FUCHSIA_ENGINE_BROWSER_WEB_ENGINE_CDM_SERVICE_H_
 #define FUCHSIA_ENGINE_BROWSER_WEB_ENGINE_CDM_SERVICE_H_
 
-#include "media/fuchsia/cdm/service/fuchsia_cdm_manager.h"
+#include <memory>
+
 #include "services/service_manager/public/cpp/binder_registry.h"
 
 namespace content {
 class RenderFrameHost;
 }
 
+namespace media {
+class FuchsiaCdmManager;
+}
+
 class WebEngineCdmService {
  public:
   explicit WebEngineCdmService(
@@ -20,7 +25,7 @@ class WebEngineCdmService {
   ~WebEngineCdmService();
 
  private:
-  media::FuchsiaCdmManager cdm_manager_;
+  std::unique_ptr<media::FuchsiaCdmManager> cdm_manager_;
 
   // Not owned pointer. |registry_| must outlive |this|.
   service_manager::BinderRegistryWithArgs<content::RenderFrameHost*>* const

media/fuchsia/cdm/DEPS

@@ -1,3 +1,4 @@
 include_rules = [
+  "+fuchsia/base",
   "+services/service_manager/public",
 ]

media/fuchsia/cdm/service/BUILD.gn

@@ -10,10 +10,14 @@ source_set("service") {
     "fuchsia_cdm_manager.h",
   ]
 
+  public_deps = [
+    "//third_party/fuchsia-sdk/sdk:media_drm",
+  ]
+
   deps = [
+    "//fuchsia/base",
     "//media",
     "//media/fuchsia/mojom",
-    "//third_party/fuchsia-sdk/sdk:media_drm",
     "//url",
   ]
 }