Media Galleries: Disable write support.

chrome/common/extensions/permissions/media_galleries_permission.cc

Index: chrome/common/extensions/permissions/media_galleries_permission.cc
===================================================================
--- chrome/common/extensions/permissions/media_galleries_permission.cc	(revision 181366)
+++ chrome/common/extensions/permissions/media_galleries_permission.cc	(working copy)
@@ -19,7 +19,6 @@
 const char MediaGalleriesPermission::kAllAutoDetectedPermission[] =
     "allAutoDetected";
 const char MediaGalleriesPermission::kReadPermission[] = "read";
-const char MediaGalleriesPermission::kWritePermission[] = "write";
 
 MediaGalleriesPermission::MediaGalleriesPermission(
     const APIPermissionInfo* info)
@@ -36,14 +35,10 @@
     return false;
   }
 
-  bool has_read = false;
-  bool has_write = false;
   for (std::set<MediaGalleriesPermissionData>::const_iterator it =
       data_set_.begin(); it != data_set_.end(); ++it) {
     if (it->permission() == kReadPermission) {
-      has_read = true;
-    } else if (it->permission() == kWritePermission) {
-      has_write = true;
+      continue;
     } else if (it->permission() == kAllAutoDetectedPermission) {
       continue;
     } else {
@@ -55,8 +50,7 @@
     }
   }
 
-  // Read and write permissions are mutually exclusive.
-  return (!has_read || !has_write);
+  return true;
 }
 
 PermissionMessages MediaGalleriesPermission::GetMessages() const {
@@ -65,7 +59,6 @@
 
   bool has_all_auto_detected = false;
   bool has_read = false;
-  bool has_write = false;
 
   for (std::set<MediaGalleriesPermissionData>::const_iterator it =
       data_set_.begin(); it != data_set_.end(); ++it) {
@@ -73,24 +66,16 @@
       has_all_auto_detected = true;
     else if (it->permission() == kReadPermission)
       has_read = true;
-    else if (it->permission() == kWritePermission)
-      has_write = true;
   }
-  // FromValue() should never allow this.
-  DCHECK(!has_read || !has_write);
 
   // If |has_all_auto_detected| is false, then Chrome will prompt the user at
   // runtime when the extension call the getMediaGalleries API.
-  if (!has_all_auto_detected || !(has_read || has_write))
+  if (!has_all_auto_detected || !has_read)
     return result;
 
-  // Separate PermissionMessage IDs for read and write. Otherwise an extension
-  // can silently gain new access capabilities.
-  PermissionMessage::ID permission_id = has_write ?
-      PermissionMessage::kMediaGalleriesAllGalleriesWrite :
+  PermissionMessage::ID permission_id =
       PermissionMessage::kMediaGalleriesAllGalleriesRead;
-  int message_id = has_write ?
-      IDS_EXTENSION_PROMPT_WARNING_MEDIA_GALLERIES_READ_WRITE_ALL_GALLERIES :
+  int message_id =
       IDS_EXTENSION_PROMPT_WARNING_MEDIA_GALLERIES_READ_ALL_GALLERIES;
   result.push_back(
       PermissionMessage(permission_id, l10n_util::GetStringUTF16(message_id)));