Show crashed extensions on chrome://extensions.

BUG=31535
TEST=updated JSON serialization tests, added check in browsertest, manual test using task manager to terminate an extension process

Review URL: http://codereview.chromium.org/6158001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@71263 0039d316-1c4b-4281-b951-d872f2087c98

6 files changed, 98 insertions, 5 deletions

diff --git a/chrome/browser/extensions/extension_crash_recovery_browsertest.cc b/chrome/browser/extensions/extension_crash_recovery_browsertest.cc
index cb489a1..cc5e62e 100644
--- a/chrome/browser/extensions/extension_crash_recovery_browsertest.cc
+++ b/chrome/browser/extensions/extension_crash_recovery_browsertest.cc
@@ -111,25 +111,38 @@ class ExtensionCrashRecoveryTest : public ExtensionBrowserTest {
 
 IN_PROC_BROWSER_TEST_F(ExtensionCrashRecoveryTest, Basic) {
   const size_t size_before = GetExtensionService()->extensions()->size();
+  const size_t crash_size_before =
+      GetExtensionService()->terminated_extensions()->size();
   LoadTestExtension();
   CrashExtension(size_before);
   ASSERT_EQ(size_before, GetExtensionService()->extensions()->size());
+  ASSERT_EQ(crash_size_before + 1,
+            GetExtensionService()->terminated_extensions()->size());
   AcceptCrashedExtensionInfobar(0);
 
   SCOPED_TRACE("after clicking the infobar");
   CheckExtensionConsistency(size_before);
+  ASSERT_EQ(crash_size_before,
+            GetExtensionService()->terminated_extensions()->size());
 }
 
 IN_PROC_BROWSER_TEST_F(ExtensionCrashRecoveryTest, CloseAndReload) {
   const size_t size_before = GetExtensionService()->extensions()->size();
+  const size_t crash_size_before =
+      GetExtensionService()->terminated_extensions()->size();
   LoadTestExtension();
   CrashExtension(size_before);
   ASSERT_EQ(size_before, GetExtensionService()->extensions()->size());
+  ASSERT_EQ(crash_size_before + 1,
+            GetExtensionService()->terminated_extensions()->size());
+
   CancelCrashedExtensionInfobar(0);
   ReloadExtension(first_extension_id_);
 
   SCOPED_TRACE("after reloading");
   CheckExtensionConsistency(size_before);
+  ASSERT_EQ(crash_size_before,
+            GetExtensionService()->terminated_extensions()->size());
 }
 
 IN_PROC_BROWSER_TEST_F(ExtensionCrashRecoveryTest, ReloadIndependently) {
@@ -316,12 +329,18 @@ IN_PROC_BROWSER_TEST_F(ExtensionCrashRecoveryTest, TwoExtensionsCrashSecond) {
 IN_PROC_BROWSER_TEST_F(ExtensionCrashRecoveryTest,
                        TwoExtensionsCrashBothAtOnce) {
   const size_t size_before = GetExtensionService()->extensions()->size();
+  const size_t crash_size_before =
+      GetExtensionService()->terminated_extensions()->size();
   LoadTestExtension();
   LoadSecondExtension();
   CrashExtension(size_before);
   ASSERT_EQ(size_before + 1, GetExtensionService()->extensions()->size());
+  ASSERT_EQ(crash_size_before + 1,
+            GetExtensionService()->terminated_extensions()->size());
   CrashExtension(size_before);
   ASSERT_EQ(size_before, GetExtensionService()->extensions()->size());
+  ASSERT_EQ(crash_size_before + 2,
+            GetExtensionService()->terminated_extensions()->size());
 
   {
     SCOPED_TRACE("first infobar");
@@ -421,3 +440,19 @@ IN_PROC_BROWSER_TEST_F(ExtensionCrashRecoveryTest,
     CheckExtensionConsistency(size_before + 1);
   }
 }
+
+IN_PROC_BROWSER_TEST_F(ExtensionCrashRecoveryTest, CrashAndUnloadAll) {
+  const size_t size_before = GetExtensionService()->extensions()->size();
+  const size_t crash_size_before =
+      GetExtensionService()->terminated_extensions()->size();
+  LoadTestExtension();
+  LoadSecondExtension();
+  CrashExtension(size_before);
+  ASSERT_EQ(size_before + 1, GetExtensionService()->extensions()->size());
+  ASSERT_EQ(crash_size_before + 1,
+            GetExtensionService()->terminated_extensions()->size());
+
+  GetExtensionService()->UnloadAllExtensions();
+  ASSERT_EQ(crash_size_before,
+            GetExtensionService()->terminated_extensions()->size());
+}
diff --git a/chrome/browser/extensions/extension_service.cc b/chrome/browser/extensions/extension_service.cc
index 8140d2b..67cb44e 100644
--- a/chrome/browser/extensions/extension_service.cc
+++ b/chrome/browser/extensions/extension_service.cc
@@ -603,6 +603,10 @@ const ExtensionList* ExtensionService::disabled_extensions() const {
   return &disabled_extensions_;
 }
 
+const ExtensionList* ExtensionService::terminated_extensions() const {
+  return &terminated_extensions_;
+}
+
 const PendingExtensionMap& ExtensionService::pending_extensions() const {
   return pending_extensions_;
 }
@@ -1534,6 +1538,8 @@ void ExtensionService::UnloadExtension(
 void ExtensionService::UnloadAllExtensions() {
   extensions_.clear();
   disabled_extensions_.clear();
+  terminated_extension_ids_.clear();
+  terminated_extensions_.clear();
   extension_runtime_data_.clear();
 
   // TODO(erikkay) should there be a notification for this?  We can't use
@@ -1590,6 +1596,9 @@ void ExtensionService::OnExtensionLoaded(const Extension* extension) {
   // The extension is now loaded, remove its data from unloaded extension map.
   unloaded_extension_paths_.erase(extension->id());
 
+  // If a terminated extension is loaded, remove it from the terminated list.
+  UntrackTerminatedExtension(extension->id());
+
   // If the extension was disabled for a reload, then enable it.
   if (disabled_extension_paths_.erase(extension->id()) > 0)
     EnableExtension(extension->id());
@@ -1844,6 +1853,25 @@ const Extension* ExtensionService::GetExtensionByIdInternal(
   return NULL;
 }
 
+void ExtensionService::TrackTerminatedExtension(const Extension* extension) {
+  if (terminated_extension_ids_.insert(extension->id()).second)
+    terminated_extensions_.push_back(make_scoped_refptr(extension));
+}
+
+void ExtensionService::UntrackTerminatedExtension(const std::string& id) {
+  if (terminated_extension_ids_.erase(id) <= 0)
+    return;
+
+  std::string lowercase_id = StringToLowerASCII(id);
+  for (ExtensionList::iterator iter = terminated_extensions_.begin();
+       iter != terminated_extensions_.end(); ++iter) {
+    if ((*iter)->id() == lowercase_id) {
+      terminated_extensions_.erase(iter);
+      return;
+    }
+  }
+}
+
 const Extension* ExtensionService::GetWebStoreApp() {
   return GetExtensionById(extension_misc::kWebStoreAppId, false);
 }
@@ -1997,6 +2025,7 @@ void ExtensionService::Observe(NotificationType type,
         break;
 
       ExtensionHost* host = Details<ExtensionHost>(details).ptr();
+      TrackTerminatedExtension(host->extension());
 
       // Unload the entire extension. We want it to be in a consistent state:
       // either fully working or not loaded at all, but never half-crashed.
diff --git a/chrome/browser/extensions/extension_service.h b/chrome/browser/extensions/extension_service.h
index 9e4206c..21c4a57 100644
--- a/chrome/browser/extensions/extension_service.h
+++ b/chrome/browser/extensions/extension_service.h
@@ -156,6 +156,7 @@ class ExtensionService
   // Gets the list of currently installed extensions.
   virtual const ExtensionList* extensions() const;
   virtual const ExtensionList* disabled_extensions() const;
+  virtual const ExtensionList* terminated_extensions() const;
 
   // Gets the set of pending extensions.
   virtual const PendingExtensionMap& pending_extensions() const;
@@ -468,6 +469,11 @@ class ExtensionService
                                             bool include_enabled,
                                             bool include_disabled);
 
+
+  // Keep track of terminated extensions.
+  void TrackTerminatedExtension(const Extension* extension);
+  void UntrackTerminatedExtension(const std::string& id);
+
   // Like AddPendingExtension*() functions above, but assumes an
   // extension with the same id is not already installed.
   void AddPendingExtensionInternal(
@@ -508,6 +514,12 @@ class ExtensionService
   // The list of installed extensions that have been disabled.
   ExtensionList disabled_extensions_;
 
+  // The list of installed extensions that have been terminated.
+  ExtensionList terminated_extensions_;
+
+  // Used to quickly check if an extension was terminated.
+  std::set<std::string> terminated_extension_ids_;
+
   // The set of pending extensions.
   PendingExtensionMap pending_extensions_;
 
diff --git a/chrome/browser/extensions/extension_ui_unittest.cc b/chrome/browser/extensions/extension_ui_unittest.cc
index 1bda60a..5980109 100644
--- a/chrome/browser/extensions/extension_ui_unittest.cc
+++ b/chrome/browser/extensions/extension_ui_unittest.cc
@@ -53,7 +53,7 @@ namespace {
     // Produce test output.
     scoped_ptr<DictionaryValue> actual_output_data(
         ExtensionsDOMHandler::CreateExtensionDetailValue(NULL, extension.get(),
-                                                         pages, true));
+                                                         pages, true, false));
 
     // Compare the outputs.
     return expected_output_data->Equals(actual_output_data.get());
diff --git a/chrome/browser/extensions/extensions_ui.cc b/chrome/browser/extensions/extensions_ui.cc
index e191a89..a653ccc 100644
--- a/chrome/browser/extensions/extensions_ui.cc
+++ b/chrome/browser/extensions/extensions_ui.cc
@@ -123,6 +123,8 @@ void ExtensionsUIHTMLSource::StartDataRequest(const std::string& path,
       ASCIIToUTF16("'>") +
       l10n_util::GetStringUTF16(IDS_GET_MORE_EXTENSIONS) +
       ASCIIToUTF16("</a>"));
+  localized_strings.SetString("extensionCrashed",
+      l10n_util::GetStringUTF16(IDS_EXTENSIONS_CRASHED_EXTENSION));
   localized_strings.SetString("extensionDisabled",
       l10n_util::GetStringUTF16(IDS_EXTENSIONS_DISABLED_EXTENSION));
   localized_strings.SetString("inDevelopment",
@@ -349,7 +351,7 @@ void ExtensionsDOMHandler::HandleRequestExtensionsData(const ListValue* args) {
           extensions_service_.get(),
           *extension,
           GetActivePagesForExtension(*extension),
-          true));  // enabled
+          true, false));  // enabled, terminated
       extension_icons->push_back(PickExtensionIcon(*extension));
     }
   }
@@ -361,7 +363,20 @@ void ExtensionsDOMHandler::HandleRequestExtensionsData(const ListValue* args) {
           extensions_service_.get(),
           *extension,
           GetActivePagesForExtension(*extension),
-          false));  // enabled
+          false, false));  // enabled, terminated
+      extension_icons->push_back(PickExtensionIcon(*extension));
+    }
+  }
+  extensions = extensions_service_->terminated_extensions();
+  std::vector<ExtensionPage> empty_pages;
+  for (ExtensionList::const_iterator extension = extensions->begin();
+       extension != extensions->end(); ++extension) {
+    if (ShouldShowExtension(*extension)) {
+      extensions_list->Append(CreateExtensionDetailValue(
+          extensions_service_.get(),
+          *extension,
+          empty_pages,  // Terminated process has no active pages.
+          false, true));  // enabled, terminated
       extension_icons->push_back(PickExtensionIcon(*extension));
     }
   }
@@ -790,7 +805,7 @@ static bool ExtensionWantsFileAccess(const Extension* extension) {
 // Static
 DictionaryValue* ExtensionsDOMHandler::CreateExtensionDetailValue(
     ExtensionService* service, const Extension* extension,
-    const std::vector<ExtensionPage>& pages, bool enabled) {
+    const std::vector<ExtensionPage>& pages, bool enabled, bool terminated) {
   DictionaryValue* extension_data = new DictionaryValue();
 
   extension_data->SetString("id", extension->id());
@@ -798,6 +813,7 @@ DictionaryValue* ExtensionsDOMHandler::CreateExtensionDetailValue(
   extension_data->SetString("description", extension->description());
   extension_data->SetString("version", extension->version()->GetString());
   extension_data->SetBoolean("enabled", enabled);
+  extension_data->SetBoolean("terminated", terminated);
   extension_data->SetBoolean("enabledIncognito",
       service ? service->IsIncognitoEnabled(extension) : false);
   extension_data->SetBoolean("wantsFileAccess",
diff --git a/chrome/browser/extensions/extensions_ui.h b/chrome/browser/extensions/extensions_ui.h
index b7a9b69..37037ef 100644
--- a/chrome/browser/extensions/extensions_ui.h
+++ b/chrome/browser/extensions/extensions_ui.h
@@ -114,7 +114,8 @@ class ExtensionsDOMHandler
       ExtensionService* service,
       const Extension* extension,
       const std::vector<ExtensionPage>& pages,
-      bool enabled);
+      bool enabled,
+      bool terminated);
 
   // ContentScript JSON Struct for page. (static for ease of testing).
   static DictionaryValue* CreateContentScriptDetailValue(