Initial support for web-extent background pages.

This patch adds a new RVH container: BackgroundContents. The idea is that apps can open a live web-page as a "background" page using window.open('<url>', '<name>', 'background');

If 'background' is specified and the opener is within the app's extent, a BackgroundContents will be used. Otherwise, the 'background' feature is ignored and it is treated as a regular popup call.

Note that as of this patch the following are explicitly not-yet addressed:

1) Session storage for BackgroundContents
2) SSL (or other failures) requiring UI
3) Javascript messages (alert, etc...)
4) Session restore

TEST=All tests should pass
BUG=41275

Review URL: http://codereview.chromium.org/1734014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@46544 0039d316-1c4b-4281-b951-d872f2087c98

6 files changed, 22 insertions, 4 deletions

diff --git a/chrome/common/extensions/extension.cc b/chrome/common/extensions/extension.cc
index 4c82ad1..fad9130 100644
--- a/chrome/common/extensions/extension.cc
+++ b/chrome/common/extensions/extension.cc
@@ -119,6 +119,7 @@ const int Extension::kIconSizes[] = {
 const int Extension::kPageActionIconMaxSize = 19;
 const int Extension::kBrowserActionIconMaxSize = 19;
 
+const char* Extension::kBackgroundPermission = "background";
 const char* Extension::kBookmarkPermission = "bookmarks";
 const char* Extension::kExperimentalPermission = "experimental";
 const char* Extension::kGeolocationPermission = "geolocation";
@@ -128,6 +129,7 @@ const char* Extension::kTabPermission = "tabs";
 const char* Extension::kUnlimitedStoragePermission = "unlimited_storage";
 
 const char* Extension::kPermissionNames[] = {
+  Extension::kBackgroundPermission,
   Extension::kBookmarkPermission,
   Extension::kExperimentalPermission,
   Extension::kGeolocationPermission,
diff --git a/chrome/common/extensions/extension.h b/chrome/common/extensions/extension.h
index 7a1fe93..be015d2 100644
--- a/chrome/common/extensions/extension.h
+++ b/chrome/common/extensions/extension.h
@@ -87,6 +87,7 @@ class Extension {
   static const int kBrowserActionIconMaxSize;
 
   // Each permission is a module that the extension is permitted to use.
+  static const char* kBackgroundPermission;
   static const char* kBookmarkPermission;
   static const char* kExperimentalPermission;
   static const char* kGeolocationPermission;
diff --git a/chrome/common/extensions/extension_constants.h b/chrome/common/extensions/extension_constants.h
index 36ba762..2353b35 100644
--- a/chrome/common/extensions/extension_constants.h
+++ b/chrome/common/extensions/extension_constants.h
@@ -188,4 +188,8 @@ namespace extension_filenames {
   extern const char* kDecodedMessageCatalogsFilename;
 }
 
+namespace extension_misc {
+  const int kUnknownWindowId = -1;
+}  // extension_misc
+
 #endif  // CHROME_COMMON_EXTENSIONS_EXTENSION_CONSTANTS_H_
diff --git a/chrome/common/notification_type.h b/chrome/common/notification_type.h
index d2463a5..d8b46b4 100644
--- a/chrome/common/notification_type.h
+++ b/chrome/common/notification_type.h
@@ -467,6 +467,16 @@ class NotificationType {
     // view host for the page, there are no details.
     FOCUS_CHANGED_IN_PAGE,
 
+    // BackgroundContents ------------------------------------------------------
+
+    // The background contents navigated to a new location. The source is the
+    // BackgroundContents, and the details are contained RenderViewHost.
+    BACKGROUND_CONTENTS_NAVIGATED,
+
+    // The background contents is being deleted. The source is the
+    // BackgroundContents, and the details are the contained RendeViewHost.
+    BACKGROUND_CONTENTS_DELETED,
+
     // Child Processes ---------------------------------------------------------
 
     // This notification is sent when a child process host has connected to a
diff --git a/chrome/common/render_messages_internal.h b/chrome/common/render_messages_internal.h
index d575873..2bc18dd 100644
--- a/chrome/common/render_messages_internal.h
+++ b/chrome/common/render_messages_internal.h
@@ -654,11 +654,11 @@ IPC_BEGIN_MESSAGES(View)
                       int /* id of the request message */,
                       webkit_glue::FormData /* form data */)
 
-  // Sent by the Browser process to alert a window about whether a blocked
-  // popup notification is visible. The renderer assumes every new window is a
+  // Sent by the Browser process to alert a window about whether a it should
+  // allow a scripted window.close(). The renderer assumes every new window is a
   // blocked popup until notified otherwise.
-  IPC_MESSAGE_ROUTED1(ViewMsg_PopupNotificationVisibilityChanged,
-                      bool /* Whether it is visible */)
+  IPC_MESSAGE_ROUTED1(ViewMsg_AllowScriptToClose,
+                      bool /* script_can_close */)
 
   // Sent by AudioRendererHost to renderer to request an audio packet.
   IPC_MESSAGE_ROUTED3(ViewMsg_RequestAudioPacket,
diff --git a/chrome/common/view_types.h b/chrome/common/view_types.h
index d3f1782..f74eb36 100644
--- a/chrome/common/view_types.h
+++ b/chrome/common/view_types.h
@@ -12,6 +12,7 @@ class ViewType {
  public:
   enum Type {
     INVALID,
+    BACKGROUND_CONTENTS,
     TAB_CONTENTS,
     EXTENSION_TOOLSTRIP,
     EXTENSION_MOLE,