Implement size and position support for launchWebAuthFlow.

chrome/common/extensions/api/experimental_identity.idl

Index: chrome/common/extensions/api/experimental_identity.idl
diff --git a/chrome/common/extensions/api/experimental_identity.idl b/chrome/common/extensions/api/experimental_identity.idl
index b7754735c327bcd1b0e39691be1b780dd89fd95d..625b0cd645cbaf60b738f585654bddb260579c52 100644
--- a/chrome/common/extensions/api/experimental_identity.idl
+++ b/chrome/common/extensions/api/experimental_identity.idl
@@ -16,6 +16,18 @@ namespace experimental.identity {
 
     // Whether to launch auth flow in interactive mode. Default is false.
     boolean? interactive;
+
+    // Width of the window, if one is shown in interactive mode.
+    long? width;
+
+    // Height of the window, if one is shown in interactive mode.
+    long? height;
+
+    // X coordinate of the window, if one is shown in interactive mode.
+    long? left;
+
+    // Y coordinate of the window, if one is shown in interactive mode.
+    long? top;
   };
 
   callback GetAuthTokenCallback = void (optional DOMString token);