[NoStatePrefetch] Support only GET and HEAD

chrome/browser/prerender/prerender_manager.cc

 // 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.
 
 #include "chrome/browser/prerender/prerender_manager.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <functional>
@@ skipping 57 matching lines @@
 using content::WebContents;
 using namespace chrome_browser_net;
 
 namespace prerender {
 
 namespace {
 
 // Time interval at which periodic cleanups are performed.
 const int kPeriodicCleanupIntervalMs = 1000;
 
-// Valid HTTP methods for prerendering.
-const char* const kValidHttpMethods[] = {
-  "GET",
-  "HEAD",
-  "OPTIONS",
-  "POST",
-  "TRACE",
-};
-
 // Length of prerender history, for display in chrome://net-internals
 const int kHistoryLength = 100;
 
 }  // namespace
 
 class PrerenderManager::OnCloseWebContentsDeleter
     : public content::WebContentsDelegate,
       public base::SupportsWeakPtr<
           PrerenderManager::OnCloseWebContentsDeleter> {
  public:
@@ skipping 603 matching lines @@
       base::TimeDelta delta = GetCurrentTimeTicks() - it->time;
       histograms_->RecordTimeSinceLastRecentVisit(origin, delta);
       return true;
     }
   }
 
   return false;
 }
 
 // static
-bool PrerenderManager::IsValidHttpMethod(const std::string& method) {
-  // method has been canonicalized to upper case at this point so we can just
-  // compare them.
-  DCHECK_EQ(method, base::ToUpperASCII(method));
-  for (size_t i = 0; i < arraysize(kValidHttpMethods); ++i) {
-    if (method.compare(kValidHttpMethods[i]) == 0)
-      return true;
-  }
-
-  return false;
-}
-
-// static
 bool PrerenderManager::DoesURLHaveValidScheme(const GURL& url) {
   return (url.SchemeIsHTTPOrHTTPS() ||
           url.SchemeIs(extensions::kExtensionScheme) ||
           url.SchemeIs("data"));
 }
 
 // static
 bool PrerenderManager::DoesSubresourceURLHaveValidScheme(const GURL& url) {
   return DoesURLHaveValidScheme(url) || url == GURL(url::kAboutBlankURL);
 }
@@ skipping 600 matching lines @@
   DCHECK_EQ(1u, erased);
 }
 
 void PrerenderManager::SetPrerenderContentsFactoryForTest(
     PrerenderContents::Factory* prerender_contents_factory) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   prerender_contents_factory_.reset(prerender_contents_factory);
 }
 
 }  // namespace prerender