[WebView] Add WebView platform to Finch's study.proto

components/variations/proto/study.proto

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 syntax = "proto2";
 
 option optimize_for = LITE_RUNTIME;
 
 package variations;
 
@@ skipping 164 matching lines @@
     // type, but is not actually meant to be encoded in the protobuf.
     UNKNOWN = -1;
     CANARY = 0;
     DEV = 1;
     BETA = 2;
     STABLE = 3;
   }
 
   // Possible Chrome operating system platforms.
   enum Platform {
-    PLATFORM_WINDOWS  = 0;
-    PLATFORM_MAC      = 1;
-    PLATFORM_LINUX    = 2;
-    PLATFORM_CHROMEOS = 3;
-    PLATFORM_ANDROID  = 4;
-    PLATFORM_IOS      = 5;
+    PLATFORM_WINDOWS         = 0;
+    PLATFORM_MAC             = 1;
+    PLATFORM_LINUX           = 2;
+    PLATFORM_CHROMEOS        = 3;
+    PLATFORM_ANDROID         = 4;
+    PLATFORM_IOS             = 5;
+    PLATFORM_ANDROID_WEBVIEW = 6;
   }
 
   // Possible form factors Chrome is running on.
   enum FormFactor {
     // Chrome Desktop on Windows, Mac, Linux, or ChromeOS.
     DESKTOP = 0;
     // Phone-based mobile Chrome, e.g. an Android phone or iPhone.
     PHONE   = 1;
     // Tablet-based mobile Chrome, e.g. an Android tablet or iPad.
     TABLET  = 2;
@@ skipping 115 matching lines @@
     // This is recommended for most studies that include client code.
     ACTIVATION_EXPLICIT  = 0;
     // The study will be automatically activated when it is created. This
     // is recommended for studies that do not have any client logic.
     ACTIVATION_AUTO      = 1;
   }
 
   // Activation type for this study. Defaults to ACTIVATION_EXPLICIT if omitted.
   optional ActivationType activation_type = 12;
 }