chrome-search: should not be display-isolated

chrome/renderer/chrome_content_renderer_client.cc

Index: chrome/renderer/chrome_content_renderer_client.cc
diff --git a/chrome/renderer/chrome_content_renderer_client.cc b/chrome/renderer/chrome_content_renderer_client.cc
index f30a9bd6179163c5b623ba684147c5ffa43fb32b..0870c0500226bdc68a904d7d1ecaae0fd95b815d 100644
--- a/chrome/renderer/chrome_content_renderer_client.cc
+++ b/chrome/renderer/chrome_content_renderer_client.cc
@@ -273,7 +273,10 @@ void ChromeContentRendererClient::RenderThreadStarted() {
   WebSecurityPolicy::registerURLSchemeAsDisplayIsolated(chrome_ui_scheme);
 
   WebString chrome_search_scheme(ASCIIToUTF16(chrome::kChromeSearchScheme));
-  WebSecurityPolicy::registerURLSchemeAsDisplayIsolated(chrome_search_scheme);
+  // The Instant process can only display the content but not read it.  Other
+  // processes can't display it or read it.
+  if (!command_line->HasSwitch(switches::kInstantProcess))
+    WebSecurityPolicy::registerURLSchemeAsDisplayIsolated(chrome_search_scheme);
 
   WebString dev_tools_scheme(ASCIIToUTF16(chrome::kChromeDevToolsScheme));
   WebSecurityPolicy::registerURLSchemeAsDisplayIsolated(dev_tools_scheme);