Update gclient solution advisory for WebRTC tests.

chrome/browser/media/webrtc_browsertest_common.cc

 // Copyright 2013 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 "chrome/browser/media/webrtc_browsertest_common.h"
 
 #include "base/files/file_util.h"
 #include "base/path_service.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
@@ skipping 11 matching lines @@
     FILE_PATH_LITERAL("webrtc/resources");
 const base::FilePath::CharType kReferenceFileName360p[] =
     FILE_PATH_LITERAL("reference_video_640x360_30fps");
 const base::FilePath::CharType kReferenceFileName720p[] =
     FILE_PATH_LITERAL("reference_video_1280x720_30fps");
 const base::FilePath::CharType kYuvFileExtension[] = FILE_PATH_LITERAL("yuv");
 const base::FilePath::CharType kY4mFileExtension[] = FILE_PATH_LITERAL("y4m");
 
 // This message describes how to modify your .gclient to get the reference
 // video files downloaded for you.
-static const char kAdviseOnGclientSolution[] =
-    "You need to add this solution to your .gclient to run this test:\n"
+const char kAdviseOnGclientSolution[] =
+    "To run this test, you must run download_from_google_storage --config\n"
+    "and follow the instructions (use 'browser' for project id)\n"
+    "You also need to add this solution to your .gclient:\n"
     "{\n"
     "  \"name\"        : \"webrtc.DEPS\",\n"
     "  \"url\"         : \"https://chromium.googlesource.com/chromium/deps/"
     "webrtc/webrtc.DEPS\",\n"
-    "}";
+    "}\n"
+    "and run gclient sync. This will download the required ref files.";
 
 const int kDefaultPollIntervalMsec = 250;
 
 bool IsErrorResult(const std::string& result) {
   return base::StartsWith(result, "failed-",
                           base::CompareCase::INSENSITIVE_ASCII);
 }
 
 base::FilePath GetReferenceFilesDir() {
   base::FilePath test_data_dir;
@@ skipping 105 matching lines @@
     }
   }
   LOG(ERROR)
       << "Timed out while waiting for " << javascript
       << " to evaluate to " << evaluates_to << "; last result was '" << result
       << "'";
   return false;
 }
 
 }  // namespace test