Add support for gcm_sender_id in Manifest.

content/renderer/manifest/manifest_parser_unittest.cc

 // Copyright 2014 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.
 
 #include "content/renderer/manifest/manifest_parser.h"
 
 #include "base/strings/string_util.h"
 #include "content/public/common/manifest.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 562 matching lines @@
 
   // Some invalid width/height combinations.
   {
     Manifest manifest = ParseManifest("{ \"icons\": [ {\"src\": \"\","
         "\"sizes\": \"x 40xx 1x2x3 x42 42xx42\" } ] }");
     gfx::Size any = gfx::Size(0, 0);
     EXPECT_EQ(manifest.icons[0].sizes.size(), 0u);
   }
 }
 
+TEST_F(ManifestParserTest, GCMSenderIDParseRules) {
+  // Smoke test.
+  {
+    Manifest manifest = ParseManifest("{ \"gcm_sender_id\": \"foo\" }");
+    EXPECT_TRUE(EqualsASCII(manifest.gcm_sender_id.string(), "foo"));
+  }
+
+  // Trim whitespaces.
+  {
+    Manifest manifest = ParseManifest("{ \"gcm_sender_id\": \"  foo  \" }");
+    EXPECT_TRUE(EqualsASCII(manifest.gcm_sender_id.string(), "foo"));
+  }
+
+  // Don't parse if property isn't a string.
+  {
+    Manifest manifest = ParseManifest("{ \"gcm_sender_id\": {} }");
+    EXPECT_TRUE(manifest.gcm_sender_id.is_null());
+  }
+  {
+    Manifest manifest = ParseManifest("{ \"gcm_sender_id\": 42 }");
+    EXPECT_TRUE(manifest.gcm_sender_id.is_null());
+  }
+}
+
 } // namespace content