[Extensions] Make a chrome.developerPrivate.getExtensionsInfo function

chrome/browser/extensions/api/developer_private/inspectable_views_finder.cc

Index: chrome/browser/extensions/api/developer_private/inspectable_views_finder.cc
diff --git a/chrome/browser/extensions/api/developer_private/inspectable_views_finder.cc b/chrome/browser/extensions/api/developer_private/inspectable_views_finder.cc
new file mode 100644
index 0000000000000000000000000000000000000000..2c4e50c586613035f5f0ab26e1178cf33a2e9fe0
--- /dev/null
+++ b/chrome/browser/extensions/api/developer_private/inspectable_views_finder.cc
@@ -0,0 +1,161 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/extensions/api/developer_private/inspectable_views_finder.h"
+
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/common/extensions/api/developer_private.h"
+#include "content/public/browser/render_process_host.h"
+#include "content/public/browser/render_view_host.h"
+#include "content/public/browser/web_contents.h"
+#include "extensions/browser/app_window/app_window.h"
+#include "extensions/browser/app_window/app_window_registry.h"
+#include "extensions/browser/process_manager.h"
+#include "extensions/browser/view_type_utils.h"
+#include "extensions/common/constants.h"
+#include "extensions/common/extension.h"
+#include "extensions/common/manifest_handlers/background_info.h"
+#include "url/gurl.h"
+
+namespace extensions {
+
+InspectableViewsFinder::InspectableViewsFinder(
+    Profile* profile,
+    content::RenderViewHost* deleting_rvh)
+    : profile_(profile),
+      deleting_rvh_(deleting_rvh) {
+}
+
+InspectableViewsFinder::~InspectableViewsFinder() {
+}
+
+// static
+InspectableViewsFinder::View InspectableViewsFinder::ConstructView(
+    const GURL& url,
+    int render_process_id,
+    int render_view_id,
+    bool incognito,
+    bool generated_background_page) {
+  linked_ptr<api::developer_private::ExtensionView> view(
+      new api::developer_private::ExtensionView());
+  if (url.scheme() == kExtensionScheme) {
+    // No leading slash.
+    view->path = url.path().substr(1);
+  } else {
+    // For live pages, use the full URL.

[not at google - send to devlin, 2015/03/11 17:43:05]

Why? Is this part of the API? Seems like the sort of thing that the user of the
API should figure out: give it a valid URL, and let it pull out the path if it
wants it.

[Devlin, 2015/03/11 21:45:53]

I'd be inclined to agree, but kinda wanna leave it this way for backwards
compatability (this is used by ExtensionSettingsHandler and getItemsInfo).

[not at google - send to devlin, 2015/03/11 21:50:24]

Backwards compatibility with a bad API? I think we'll be fine to change it. The
mangler can handle any mangling, and updating chrome://extensions shouldn't be a
drama.

[Devlin, 2015/03/11 23:34:07]

Done.

+    view->path = url.spec();
+  }
+  view->render_process_id = render_process_id;
+  view->render_view_id = render_view_id;
+  view->incognito = incognito;
+  view->generated_background_page = generated_background_page;
+  return view;
+}
+
+InspectableViewsFinder::ViewList InspectableViewsFinder::GetViewsForExtension(
+    const Extension& extension,
+    bool is_enabled) {
+  ViewList result;
+  GetViewsForExtensionForProfile(
+      extension, profile_, is_enabled, false, &result);
+  if (profile_->HasOffTheRecordProfile()) {
+    GetViewsForExtensionForProfile(
+        extension,
+        profile_->GetOffTheRecordProfile(),
+        is_enabled,
+        true,
+        &result);
+  }
+
+  return result;
+}
+
+void InspectableViewsFinder::GetViewsForExtensionForProfile(
+    const Extension& extension,
+    Profile* profile,
+    bool is_enabled,
+    bool is_incognito,
+    ViewList* result) {
+  ProcessManager* process_manager = ProcessManager::Get(profile);
+  // Get the extension process's active views.
+  GetViewsForExtensionProcess(
+      extension,
+      process_manager->GetRenderViewHostsForExtension(extension.id()),
+      is_incognito,
+      result);
+  // Get app window views, if not incognito.
+  if (!is_incognito)
+    GetAppWindowViewsForExtension(extension, result);
+  // Include a link to start the lazy background page, if applicable.
+  if (BackgroundInfo::HasLazyBackgroundPage(&extension) &&
+      is_enabled &&
+      !process_manager->GetBackgroundHostForExtension(extension.id())) {
+    result->push_back(ConstructView(
+        BackgroundInfo::GetBackgroundURL(&extension),
+        -1,
+        -1,

[not at google - send to devlin, 2015/03/11 17:43:05]

Why are these -1?

[Devlin, 2015/03/11 21:45:54]

For some very strange reason, background pages have -1 for rvh/rvp.  I'm
inclined to leave it that way for now for the same reason as above.

+        is_incognito,
+        BackgroundInfo::HasGeneratedBackgroundPage(&extension)));
+  }
+}
+
+void InspectableViewsFinder::GetViewsForExtensionProcess(
+    const Extension& extension,
+    const std::set<content::RenderViewHost*>& views,
+    bool is_incognito,
+    ViewList* result) {
+  bool has_generated_background_page =
+      BackgroundInfo::HasGeneratedBackgroundPage(&extension);
+  for (const content::RenderViewHost* host : views) {
+    content::WebContents* web_contents =
+        content::WebContents::FromRenderViewHost(host);
+    ViewType host_type = GetViewType(web_contents);
+    if (host == deleting_rvh_ ||
+        VIEW_TYPE_EXTENSION_POPUP == host_type ||

[not at google - send to devlin, 2015/03/11 17:43:05]

No yoda expressions; use host_type == VIEW_TYPE_EXTENSION_POPUP.
Also: parens around the body here, it's a 3-line condition.

[Devlin, 2015/03/11 21:45:53]

Like them either, I did not.  Trying to make a simple copy-paste, I was.

+        VIEW_TYPE_EXTENSION_DIALOG == host_type)

[not at google - send to devlin, 2015/03/11 17:43:05]

Why are popups and dialogs filtered out anyway? That's odd.

[Devlin, 2015/03/11 21:45:53]

My guess is because they are inspected separately (e.g., right clicking the
extension icon).  Not sure if we *need* to do that, but we can always change it
later if appropriate.

[not at google - send to devlin, 2015/03/11 21:50:24]

Alright, well something needs to change, because the naming does not match up
with the behavior, and that's confusing. So either:
A- rename this method
B- don't filter out popups and dialogs, then do it on the JS side - see other
comment about supporting backwards compatible behavior in the mangler.
I think B is fine. A popup is modal, and I don't even know what an extension
dialog is.

[Devlin, 2015/03/11 23:34:07]

Done.

+      continue;
+
+    GURL url = web_contents->GetURL();

[not at google - send to devlin, 2015/03/11 17:43:05]

const GURL&

[Devlin, 2015/03/11 21:45:53]

Done.

+    content::RenderProcessHost* process = host->GetProcess();
+    bool is_background_page =
+        (url == BackgroundInfo::GetBackgroundURL(&extension));
+    result->push_back(ConstructView(
+        url,
+        process->GetID(),
+        host->GetRoutingID(),
+        is_incognito,
+        is_background_page && has_generated_background_page));
+  }
+}
+
+void InspectableViewsFinder::GetAppWindowViewsForExtension(
+    const Extension& extension,
+    ViewList* result) {
+  AppWindowRegistry* registry = AppWindowRegistry::Get(profile_);
+  if (!registry)
+    return;
+
+  AppWindowRegistry::AppWindowList windows =
+      registry->GetAppWindowsForApp(extension.id());
+
+  bool has_generated_background_page =
+      BackgroundInfo::HasGeneratedBackgroundPage(&extension);
+  for (const AppWindow* window : windows) {
+    content::WebContents* web_contents = window->web_contents();
+    content::RenderViewHost* host = web_contents->GetRenderViewHost();
+    content::RenderProcessHost* process = host->GetProcess();
+
+    bool is_background_page =
+        (web_contents->GetURL() ==
+             BackgroundInfo::GetBackgroundURL(&extension));
+    result->push_back(ConstructView(
+        web_contents->GetURL(),
+        process->GetID(),
+        host->GetRoutingID(),
+        false,
+        is_background_page && has_generated_background_page));
+  }
+}
+
+}  // namespace extensions