Merge pull request #10008 from qazbnm456/fix-pdf-viewer

Fix a query string parsing problem happend to PDF Viewer

atom/browser/atom_resource_dispatcher_host_delegate.cc

@@ -87,8 +87,11 @@ void OnPdfResourceIntercepted(
   // by the webui page.
   // chrome://pdf-viewer/index.html?src=https://somepage/123.pdf
   content::NavigationController::LoadURLParams params(
-      GURL(base::StringPrintf("%sindex.html?%s=%s", kPdfViewerUIOrigin,
-                              kPdfPluginSrc, original_url.spec().c_str())));
+      GURL(base::StringPrintf(
+          "%sindex.html?%s=%s",
+          kPdfViewerUIOrigin,
+          kPdfPluginSrc,
+          net::EscapeUrlEncodedData(original_url.spec(), false).c_str())));
   web_contents->GetController().LoadURLWithParams(params);
 }
 

atom/browser/atom_web_ui_controller_factory.cc

@@ -11,6 +11,7 @@
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "content/public/browser/web_contents.h"
+#include "net/base/escape.h"
 
 namespace atom {
 
@@ -52,9 +53,15 @@ AtomWebUIControllerFactory::CreateWebUIControllerForURL(content::WebUI* web_ui,
     base::StringPairs toplevel_params;
     base::SplitStringIntoKeyValuePairs(url.query(), '=', '&', &toplevel_params);
     std::string stream_id, src;
+
+    const net::UnescapeRule::Type unescape_rules =
+      net::UnescapeRule::SPACES | net::UnescapeRule::PATH_SEPARATORS |
+      net::UnescapeRule::URL_SPECIAL_CHARS_EXCEPT_PATH_SEPARATORS |
+      net::UnescapeRule::REPLACE_PLUS_WITH_SPACE;
+
     for (const auto& param : toplevel_params) {
       if (param.first == kPdfPluginSrc) {
-        src = param.second;
+        src = net::UnescapeURLComponent(param.second, unescape_rules);
       }
     }
     if (url.has_ref()) {