Revert of Revert of Never send a referrer header if the referrer is not a web...

Revert of Revert of Never send a referrer header if the referrer is not a web url (https://codereview.chromium.org/133863003/)

Reason for revert:
Fixed the browser test meanwhile.

Original issue's description:
> Revert of Never send a referrer header if the referrer is not a web url (https://codereview.chromium.org/136583002/)
> 
> Reason for revert:
> This is the probable cause for the failing browser test CorrectReferrer. See:
> 
> http://build.chromium.org/p/chromium.webkit/builders/Linux%20Tests%20%28dbg%29/builds/1302/steps/browser_tests/logs/CorrectReferrer
> 
> http://build.chromium.org/p/chromium.webkit/builders/Mac10.8%20Tests/builds/5398/steps/browser_tests/logs/CorrectReferrer
> 
> http://build.chromium.org/p/chromium.webkit/builders/Win7%20Tests/builds/543/steps/browser_tests/logs/CorrectReferrer
> 
> Original issue's description:
> > Never send a referrer header if the referrer is not a web url
> > 
> > BUG=none
> > R=abarth@chromium.org
> > 
> > Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=165085
> 
> TBR=abarth@chromium.org,jochen@chromium.org
> NOTREECHECKS=true
> NOTRY=true
> BUG=none
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=165090

TBR=abarth@chromium.org,tdanderson@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=none

Review URL: https://codereview.chromium.org/130173004

git-svn-id: svn://svn.chromium.org/blink/trunk@165140 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/platform/blink_platform.gypi

@@ -884,6 +884,7 @@
       'weborigin/KURLTest.cpp',
       'weborigin/OriginAccessEntryTest.cpp',
       'weborigin/SecurityOriginTest.cpp',
+      'weborigin/SecurityPolicyTest.cpp',
     ],
     # NOTE: these are legacy unit tests, do not add more!
     'platform_web_unittest_files': [

third_party/WebKit/Source/platform/weborigin/SecurityPolicy.cpp

@@ -70,6 +70,9 @@ String SecurityPolicy::generateReferrerHeader(ReferrerPolicy referrerPolicy, con
     if (referrer.isEmpty())
         return String();
 
+    if (!(protocolIs(referrer, "https") || protocolIs(referrer, "http")))
+        return String();
+
     switch (referrerPolicy) {
     case ReferrerPolicyNever:
         return String();

third_party/WebKit/Source/platform/weborigin/SecurityPolicyTest.cpp

+/*
+ * Copyright (C) 2014 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "platform/weborigin/SecurityPolicy.h"
+
+#include "platform/weborigin/KURL.h"
+#include <gtest/gtest.h>
+
+using WebCore::KURL;
+using WebCore::SecurityPolicy;
+
+namespace {
+
+TEST(SecurityPolicyTest, ReferrerIsAlwaysAWebURL)
+{
+    EXPECT_TRUE(String() == SecurityPolicy::generateReferrerHeader(WebCore::ReferrerPolicyAlways, KURL(WebCore::ParsedURLString, "http://example.com/"), String::fromUTF8("chrome://somepage/")));
+}
+
+} // namespace
+