media: Check Widevine CDM registration and availability.

chrome/browser/media/pepper_cdm_test_helper.h

Index: chrome/browser/media/pepper_cdm_test_helper.h
diff --git a/chrome/browser/media/pepper_cdm_test_helper.h b/chrome/browser/media/pepper_cdm_test_helper.h
index 87e766ff7b006f49fd1ddd957b9cb37fe4581062..34956da7570c6e7d22bf7363a10b24262fa725e4 100644
--- a/chrome/browser/media/pepper_cdm_test_helper.h
+++ b/chrome/browser/media/pepper_cdm_test_helper.h
@@ -25,6 +25,10 @@ extern const char kClearKeyCdmDisplayName[];
 // Pepper type for Clear Key CDM.
 extern const char kClearKeyCdmPepperMimeType[];
 
+// Returns the path a pepper CDM adapter.
+base::FilePath GetPepperCdmPath(const std::string& adapter_base_dir,
+                                const std::string& adapter_file_name);
+
 // Builds the string to pass to kRegisterPepperPlugins for a single
 // CDM using the provided parameters and a dummy version.
 // Multiple results may be passed to kRegisterPepperPlugins, separated by ",".
@@ -44,4 +48,7 @@ void RegisterPepperCdm(base::CommandLine* command_line,
                        const std::string& mime_type,
                        bool expect_adapter_exists = true);
 
+// Returns whether a pepper CDM with |mime_type| is registered.
+bool IsPepperCdmRegistered(const std::string& mime_type);
+
 #endif  // CHROME_BROWSER_MEDIA_PEPPER_CDM_TEST_HELPER_H_