Introduce the ENABLE_BROWSER_CDMS macro.

content/renderer/media/crypto/content_decryption_module_factory.h

Index: content/renderer/media/crypto/content_decryption_module_factory.h
diff --git a/content/renderer/media/crypto/content_decryption_module_factory.h b/content/renderer/media/crypto/content_decryption_module_factory.h
index 805a11eb82a38f0ebd18f77cdddee46cda8edabc..0af3aad1f79538797de68257f1c4644891e76855 100644
--- a/content/renderer/media/crypto/content_decryption_module_factory.h
+++ b/content/renderer/media/crypto/content_decryption_module_factory.h
@@ -18,7 +18,9 @@ class GURL;
 
 namespace content {
 
+#if defined(ENABLE_BROWSER_CDMS)
 class RendererCdmManager;
+#endif
 
 class ContentDecryptionModuleFactory {
  public:
@@ -29,7 +31,7 @@ class ContentDecryptionModuleFactory {
       const GURL& security_origin,
 #if defined(ENABLE_PEPPER_CDMS)
       const CreatePepperCdmCB& create_pepper_cdm_cb,
-#elif defined(OS_ANDROID)
+#elif defined(ENABLE_BROWSER_CDMS)
       RendererCdmManager* manager,
       int* cdm_id,  // Output parameter indicating the CDM ID of the MediaKeys.
 #endif  // defined(ENABLE_PEPPER_CDMS)