DevTools: add initial support for shared workers debugging

content/browser/debugger/devtools_window.cc

Index: content/browser/debugger/devtools_window.cc
diff --git a/content/browser/debugger/devtools_window.cc b/content/browser/debugger/devtools_window.cc
index ba633243a70139c39ad1e464e43ead12f04f45bc..266191a55d6ea27ad236453977cf7bbdc42fa95c 100644
--- a/content/browser/debugger/devtools_window.cc
+++ b/content/browser/debugger/devtools_window.cc
@@ -74,6 +74,11 @@ DevToolsWindow* DevToolsWindow::FindDevToolsWindow(
 }
 
 // static
+DevToolsWindow* DevToolsWindow::CreateDevToolsWindow(Profile* profile) {
+  return new DevToolsWindow(profile, NULL, false);
+}
+
+// static
 DevToolsWindow* DevToolsWindow::OpenDevToolsWindow(
     RenderViewHost* inspected_rvh) {
   return ToggleDevToolsWindow(inspected_rvh, true,
@@ -130,10 +135,12 @@ DevToolsWindow::DevToolsWindow(Profile* profile,
       this,
       NotificationType::BROWSER_THEME_CHANGED,
       Source<ThemeService>(ThemeServiceFactory::GetForProfile(profile_)));
-  TabContents* tab = inspected_rvh->delegate()->GetAsTabContents();
-  if (tab)
-    inspected_tab_ = TabContentsWrapper::GetCurrentWrapperForContents(tab);
-
+  // There is now inspected_rvh in case of shared workers.
+  if (inspected_rvh) {
+    TabContents* tab = inspected_rvh->delegate()->GetAsTabContents();
+    if (tab)
+      inspected_tab_ = TabContentsWrapper::GetCurrentWrapperForContents(tab);
+  }
   instances_.push_back(this);
 }