Fix Valgrind errors that occurred during testing.

chrome/browser/safe_browsing/client_side_detection_service_unittest.cc

 // Copyright (c) 2010 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 <map>
 #include <string>
 
 #include "base/callback.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
@@ skipping 143 matching lines @@
 
   // Invalid thumbnail.
   SkBitmap thumbnail;
   GURL url("http://a.com/");
   double score = 0.4;  // Some random client score.
   EXPECT_FALSE(SendClientReportPhishingRequest(url, score, thumbnail));
 
   // Valid thumbnail but the server returns an error.
   thumbnail.setConfig(SkBitmap::kARGB_8888_Config, 100, 100);
   ASSERT_TRUE(thumbnail.allocPixels());
+  thumbnail.eraseRGB(255, 0, 0);
   SetClientReportPhishingResponse("", false /* fail */);
   EXPECT_FALSE(SendClientReportPhishingRequest(url, score, thumbnail));
 
   // Invalid response body from the server.
   SetClientReportPhishingResponse("invalid proto response", true /* success */);
   EXPECT_FALSE(SendClientReportPhishingRequest(url, score, thumbnail));
 
   // Normal behavior.
   ClientPhishingResponse response;
   response.set_phishy(true);
   SetClientReportPhishingResponse(response.SerializeAsString(),
                                   true /* success */);
   EXPECT_TRUE(SendClientReportPhishingRequest(url, score, thumbnail));
   response.set_phishy(false);
   SetClientReportPhishingResponse(response.SerializeAsString(),
                                   true /* success */);
   EXPECT_FALSE(SendClientReportPhishingRequest(url, score, thumbnail));
 }
 
 }  // namespace safe_browsing