Implement robustness strings in requestMediaKeySystemAccess().

media/base/key_systems.h

Index: media/base/key_systems.h
diff --git a/media/base/key_systems.h b/media/base/key_systems.h
index 93317a118fcd117032cd452da44a54fb40e745ba..79c939f864d3bc3ec172179fc2fbf87aa244e548 100644
--- a/media/base/key_systems.h
+++ b/media/base/key_systems.h
@@ -85,27 +85,32 @@ MEDIA_EXPORT std::string GetPepperType(
     const std::string& concrete_key_system);
 #endif
 
-// Returns whether |key_system| supports persistent-license sessions.
-MEDIA_EXPORT bool IsPersistentLicenseSessionSupported(
+// Returns whether |key_system| supports the requested robustness level, and
+// indicates how support should interacts with the encrypted media permission.

[ddorwin, 2015/03/13 19:24:47]

Fix: "support should interacts"

[sandersd (OOO until July 31), 2015/03/13 20:11:57]

Done.

+// TODO(sandersd): Also take a list of codecs, as they affect support in some

[ddorwin, 2015/03/13 19:24:47]

...as they may affect the result?

[sandersd (OOO until July 31), 2015/03/13 20:11:57]

Done.

+// cases.
+MEDIA_EXPORT EmeRequirementSupport GetRobustnessRequirementSupport(
     const std::string& key_system,
-    bool is_permission_granted);
+    EmeMediaType media_type,
+    EmeRobustness robustness);
+
+// Returns whether |key_system| supports persistent-license sessions.
+MEDIA_EXPORT EmeRequirementSupport GetPersistentLicenseSessionSupport(
+    const std::string& key_system);
 
 // Returns whether |key_system| supports persistent-release-message sessions.
-MEDIA_EXPORT bool IsPersistentReleaseMessageSessionSupported(
-    const std::string& key_system,
-    bool is_permission_granted);
+MEDIA_EXPORT EmeRequirementSupport GetPersistentReleaseMessageSessionSupport(
+    const std::string& key_system);
 
 // Returns whether |key_system| supports persistent state as requested.
-MEDIA_EXPORT bool IsPersistentStateRequirementSupported(
+MEDIA_EXPORT EmeRequirementSupport GetPersistentStateRequirementSupport(
     const std::string& key_system,
-    EmeFeatureRequirement requirement,
-    bool is_permission_granted);
+    EmeFeatureRequirement requirement);
 
 // Returns whether |key_system| supports distinctive identifiers as requested.
-MEDIA_EXPORT bool IsDistinctiveIdentifierRequirementSupported(
+MEDIA_EXPORT EmeRequirementSupport GetDistinctiveIdentifierRequirementSupport(
     const std::string& key_system,
-    EmeFeatureRequirement requirement,
-    bool is_permission_granted);
+    EmeFeatureRequirement requirement);
 
 #if defined(UNIT_TEST)
 // Helper functions to add container/codec types for testing purposes.