media: Add build flag for CDM host verification

chrome/common/media/cdm_host_file_path.cc

Index: chrome/common/media/cdm_host_file_path.cc
diff --git a/chrome/common/media/cdm_host_file_path.cc b/chrome/common/media/cdm_host_file_path.cc
index ea1974fdcfa18fe032503361e4ce81e05d643e40..5536ab7401e02417aae2cb50dba0c0aaaac103c1 100644
--- a/chrome/common/media/cdm_host_file_path.cc
+++ b/chrome/common/media/cdm_host_file_path.cc
@@ -20,6 +20,8 @@
 
 namespace chrome {
 
+#if defined(GOOGLE_CHROME_BUILD)
+
 namespace {
 
 using content::CdmHostFilePath;
@@ -108,4 +110,14 @@ void AddCdmHostFilePaths(
 #endif  // defined(OS_WIN)
 }
 
+#else  // defined(GOOGLE_CHROME_BUILD)
+
+void AddCdmHostFilePaths(
+    std::vector<content::CdmHostFilePath>* cdm_host_file_paths) {
+  NOTIMPLEMENTED() << "CDM host file paths need to be provided for the CDM to "
+                      "verify the host.";
+}
+
+#endif  // defined(GOOGLE_CHROME_BUILD)
+
 }  // namespace chrome