Renderer changes for wiring up shared memory with declarative injection

extensions/renderer/script_injection_manager.cc

Index: extensions/renderer/script_injection_manager.cc
diff --git a/extensions/renderer/script_injection_manager.cc b/extensions/renderer/script_injection_manager.cc
index 2d18757f2caceb601b39c7a771d4bef5713c61f7..14f276746aab2daf65891de3c1e916d4d280d23a 100644
--- a/extensions/renderer/script_injection_manager.cc
+++ b/extensions/renderer/script_injection_manager.cc
@@ -17,6 +17,7 @@
 #include "extensions/renderer/script_injection.h"
 #include "extensions/renderer/scripts_run_info.h"
 #include "ipc/ipc_message_macros.h"
+#include "third_party/WebKit/public/web/WebDocument.h"
 #include "third_party/WebKit/public/web/WebFrame.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 #include "third_party/WebKit/public/web/WebView.h"
@@ -48,6 +49,10 @@ class ScriptInjectionManager::RVOHelper : public content::RenderViewObserver {
   virtual void OnDestruct() OVERRIDE;
 
   virtual void OnExecuteCode(const ExtensionMsg_ExecuteCode_Params& params);
+  virtual void OnExecuteDeclarativeScript(int tab_id,
+                                          const ExtensionId& extension_id,
+                                          int script_id,
+                                          const GURL& url);
   virtual void OnPermitScriptInjection(int64 request_id);
 
   // Tells the ScriptInjectionManager to run tasks associated with
@@ -87,6 +92,8 @@ bool ScriptInjectionManager::RVOHelper::OnMessageReceived(
     IPC_MESSAGE_HANDLER(ExtensionMsg_ExecuteCode, OnExecuteCode)
     IPC_MESSAGE_HANDLER(ExtensionMsg_PermitScriptInjection,
                         OnPermitScriptInjection)
+    IPC_MESSAGE_HANDLER(ExtensionMsg_ExecuteDeclarativeScript,
+                        OnExecuteDeclarativeScript)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
@@ -150,6 +157,26 @@ void ScriptInjectionManager::RVOHelper::OnExecuteCode(
   manager_->HandleExecuteCode(params, render_view());
 }
 
+void ScriptInjectionManager::RVOHelper::OnExecuteDeclarativeScript(
+    int tab_id,
+    const ExtensionId& extension_id,
+    int script_id,
+    const GURL& url) {
+  blink::WebFrame* main_frame = render_view()->GetWebView()->mainFrame();
+  CHECK(main_frame);
+
+  // TODO(markdittmer): This would be cleaner if we compared page_ids instead.
+  // Begin script injeciton workflow only if the current URL is identical to
+  // the one that matched declarative conditions in the browser.
+  if (main_frame->top()->document().url() == url) {
+    manager_->HandleExecuteDeclarativeScript(main_frame,
+                                             tab_id,
+                                             extension_id,
+                                             script_id,
+                                             url);
+  }
+}
+
 void ScriptInjectionManager::RVOHelper::OnPermitScriptInjection(
     int64 request_id) {
   manager_->HandlePermitScriptInjection(request_id);
@@ -323,6 +350,30 @@ void ScriptInjectionManager::HandleExecuteCode(
   }
 }
 
+void ScriptInjectionManager::HandleExecuteDeclarativeScript(
+    blink::WebFrame* web_frame,
+    int tab_id,
+    const ExtensionId& extension_id,
+    int script_id,
+    const GURL& url) {
+  const Extension* extension = extensions_->GetByID(extension_id);
+  scoped_ptr<ScriptInjection> injection =
+      user_script_set_manager_->GetInjectionForDeclarativeScript(
+          script_id,
+          web_frame,
+          tab_id,
+          url,
+          extension);
+  if (injection.get()) {
+    ScriptsRunInfo scripts_run_info;
+    // TODO(markdittmer): Use return value of TryToInject for error handling.
+    injection->TryToInject(UserScript::BROWSER_DRIVEN,
+                           extension,
+                           &scripts_run_info);
+    scripts_run_info.LogRun(web_frame, UserScript::BROWSER_DRIVEN);
+  }
+}
+
 void ScriptInjectionManager::HandlePermitScriptInjection(int64 request_id) {
   ScopedVector<ScriptInjection>::iterator iter =
       pending_injections_.begin();