[Fuchsia] Use isolated-cache for the cdm_data_directory

The ContextParams.cdm_data_directory is provided by the client for the
storage of CDM user data. This CL populates this field for CastRunner
with persistent-isolated-cache. This is temporary to prevent breakage.

Bug: 1051225, b/162078899
Change-Id: Idd291e318ccaf256194ae207018c77c8cfedd574
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2315001
Commit-Queue: RJ Ascani <rjascani@google.com>
Reviewed-by: Wez <wez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#799270}

base/fuchsia/file_utils.cc

@@ -20,6 +20,7 @@ namespace base {
 namespace fuchsia {
 
 const char kPersistedDataDirectoryPath[] = "/data";
+const char kPersistedCacheDirectoryPath[] = "/cache";
 const char kServiceDirectoryPath[] = "/svc";
 const char kPackageRootDirectoryPath[] = "/pkg";
 

base/fuchsia/file_utils.h

@@ -17,6 +17,9 @@ namespace fuchsia {
 // PathService.
 BASE_EXPORT extern const char kPersistedDataDirectoryPath[];
 
+// Persisted cache directory, i.e. /cache .
+BASE_EXPORT extern const char kPersistedCacheDirectoryPath[];
+
 // Services directory, i.e. /svc .
 BASE_EXPORT extern const char kServiceDirectoryPath[];
 

build/config/fuchsia/tests-with-exec.cmx

@@ -2,6 +2,7 @@
   "sandbox": {
     "features": [
       "deprecated-ambient-replace-as-executable",
+      "isolated-cache-storage",
       "isolated-persistent-storage",
       "isolated-temp",
       "root-ssl-certificates",

build/config/fuchsia/tests.cmx

@@ -2,6 +2,7 @@
   "sandbox": {
     "features": [
       "config-data",
+      "isolated-cache-storage",
       "isolated-persistent-storage",
       "isolated-temp",
       "root-ssl-certificates",

fuchsia/runners/cast/cast_runner.cc

@@ -12,6 +12,7 @@
 #include <utility>
 
 #include "base/bind.h"
+#include "base/files/file_path.h"
 #include "base/fuchsia/file_utils.h"
 #include "base/fuchsia/filtered_service_directory.h"
 #include "base/fuchsia/fuchsia_logging.h"
@@ -210,6 +211,12 @@ fuchsia::web::CreateContextParams CastRunner::GetCommonContextParams() {
         fuchsia::web::ContextFeatureFlags::VULKAN;
   }
 
+  // TODO(b/154204041) Migrate to using persistent data, and specifying an
+  // explicit quota for CDM storage.
+  params.set_cdm_data_directory(base::fuchsia::OpenDirectory(
+      base::FilePath(base::fuchsia::kPersistedCacheDirectoryPath)));
+  CHECK(params.cdm_data_directory());
+
   const char kCastPlayreadyKeySystem[] = "com.chromecast.playready";
   params.set_playready_key_system(kCastPlayreadyKeySystem);
 

fuchsia/runners/cast/cast_runner.cmx

 {
   "sandbox": {
     "features": [
-      "config-data"
+      "config-data",
+      "isolated-cache-storage"
     ],
     "services": [
       "chromium.cast.ApplicationConfigManager",