Implement <webview>.addContentScript/removeContentScript API [1]

extensions/renderer/user_script_set_manager.cc

Index: extensions/renderer/user_script_set_manager.cc
diff --git a/extensions/renderer/user_script_set_manager.cc b/extensions/renderer/user_script_set_manager.cc
index fee2f724977c988002cee1ef85597d9e8e2998f8..9d7c23f4d6d1a874b6eb0aa26221566291102581 100644
--- a/extensions/renderer/user_script_set_manager.cc
+++ b/extensions/renderer/user_script_set_manager.cc
@@ -17,7 +17,9 @@
 namespace extensions {
 
 UserScriptSetManager::UserScriptSetManager(const ExtensionSet* extensions)
-    : static_scripts_(extensions), extensions_(extensions) {
+    : static_scripts_(extensions),
+      is_in_guest_render_process_(false),
+      extensions_(extensions) {
   content::RenderThread::Get()->AddObserver(this);
 }
 
@@ -67,11 +69,13 @@ void UserScriptSetManager::GetAllInjections(
     blink::WebFrame* web_frame,
     int tab_id,
     UserScript::RunLocation run_location) {
-  static_scripts_.GetInjections(injections, web_frame, tab_id, run_location);
+  static_scripts_.GetInjections(injections, web_frame, tab_id, run_location,
+                                is_in_guest_render_process_);
   for (UserScriptSetMap::iterator it = programmatic_scripts_.begin();
        it != programmatic_scripts_.end();
        ++it) {
-    it->second->GetInjections(injections, web_frame, tab_id, run_location);
+    it->second->GetInjections(injections, web_frame, tab_id, run_location,
+                              is_in_guest_render_process_);
   }
 }
 
@@ -95,7 +99,10 @@ UserScriptSet* UserScriptSetManager::GetProgrammaticScriptsByHostID(
 void UserScriptSetManager::OnUpdateUserScripts(
     base::SharedMemoryHandle shared_memory,
     const HostID& host_id,
-    const std::set<HostID>& changed_hosts) {
+    const std::set<HostID>& changed_hosts,
+    bool is_to_guest_render_process) {
+  is_in_guest_render_process_ = is_to_guest_render_process;
+
   if (!base::SharedMemory::IsHandleValid(shared_memory)) {
     NOTREACHED() << "Bad scripts handle";
     return;