Fix saved screenshots for feedback.

chrome/browser/ui/webui/screenshot_source.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/ui/webui/screenshot_source.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/file_util.h"
 #include "base/memory/ref_counted_memory.h"
@@ skipping 145 matching lines @@
       content::BrowserThread::FILE, FROM_HERE,
       base::Bind(&ScreenshotSource::SendSavedScreenshot,
                  base::Unretained(this), screenshot_path, request_id, file));
 }
 #endif
 
 void ScreenshotSource::CacheAndSendScreenshot(
     const std::string& screenshot_path,
     int request_id,
     ScreenshotDataPtr bytes) {
-  cached_screenshots_[screenshot_path] = bytes;
+  // Strip the query from the screenshot path.
+  std::string path = screenshot_path.substr(
+      0, screenshot_path.find_first_of("?"));
+  cached_screenshots_[path] = bytes;
   SendResponse(request_id, new base::RefCountedBytes(*bytes));
 }