Implement feature policy checks in the browser process

chrome/browser/media/webrtc/media_stream_device_permission_context.cc

Index: chrome/browser/media/webrtc/media_stream_device_permission_context.cc
diff --git a/chrome/browser/media/webrtc/media_stream_device_permission_context.cc b/chrome/browser/media/webrtc/media_stream_device_permission_context.cc
index d31aeda3480524c419ac42e59b69d1b52906f45c..52a30460193dd82a6bd1452ccfd16a568d97ade3 100644
--- a/chrome/browser/media/webrtc/media_stream_device_permission_context.cc
+++ b/chrome/browser/media/webrtc/media_stream_device_permission_context.cc
@@ -14,10 +14,26 @@
 #include "content/public/common/url_constants.h"
 #include "extensions/common/constants.h"
 
+namespace {
+
+blink::WebFeaturePolicyFeature GetFeaturePolicyFeature(
+    ContentSettingsType type) {
+  if (type == CONTENT_SETTINGS_TYPE_MEDIASTREAM_MIC) {
+    return blink::WebFeaturePolicyFeature::kMicrophone;
+  } else {

[Sergey Ulanov, 2017/05/30 18:21:06]

No else after return, please
https://chromium.googlesource.com/chromium/src/+/master/styleguide/c++/c++.md

Or alternatively use switch statement here

[raymes, 2017/05/31 07:07:54]

Done.

+    DCHECK_EQ(CONTENT_SETTINGS_TYPE_MEDIASTREAM_CAMERA, type);
+    return blink::WebFeaturePolicyFeature::kCamera;
+  }
+}
+
+}  // namespace
+
 MediaStreamDevicePermissionContext::MediaStreamDevicePermissionContext(
     Profile* profile,
     const ContentSettingsType content_settings_type)
-    : PermissionContextBase(profile, content_settings_type),
+    : PermissionContextBase(profile,
+                            content_settings_type,
+                            GetFeaturePolicyFeature(content_settings_type)),
       content_settings_type_(content_settings_type) {
   DCHECK(content_settings_type_ == CONTENT_SETTINGS_TYPE_MEDIASTREAM_MIC ||
          content_settings_type_ == CONTENT_SETTINGS_TYPE_MEDIASTREAM_CAMERA);