Add a new field "source" in launchData of chrome.app.runtime.onLaunched() to trace launch source.

extensions/common/feature_switch.cc

 // Copyright 2013 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 "extensions/common/feature_switch.h"
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/metrics/field_trial.h"
 #include "base/strings/string_util.h"
 #include "extensions/common/switches.h"
 
 namespace extensions {
 
 namespace {
 
 class CommonSwitches {
  public:
   CommonSwitches()
-      : easy_off_store_install(
-            NULL,
-            FeatureSwitch::DEFAULT_DISABLED),
-        force_dev_mode_highlighting(
-            switches::kForceDevModeHighlighting,
-            FeatureSwitch::DEFAULT_DISABLED),
-        prompt_for_external_extensions(
-            NULL,
+      : easy_off_store_install(NULL, FeatureSwitch::DEFAULT_DISABLED),
+        force_dev_mode_highlighting(switches::kForceDevModeHighlighting,
+                                    FeatureSwitch::DEFAULT_DISABLED),
+        prompt_for_external_extensions(NULL,
 #if defined(OS_WIN)
-            FeatureSwitch::DEFAULT_ENABLED),
+                                       FeatureSwitch::DEFAULT_ENABLED),
 #else
-            FeatureSwitch::DEFAULT_DISABLED),
+                                       FeatureSwitch::DEFAULT_DISABLED),
 #endif
-        error_console(
-            switches::kErrorConsole,
-            FeatureSwitch::DEFAULT_DISABLED),
-        enable_override_bookmarks_ui(
-            switches::kEnableOverrideBookmarksUI,
-            FeatureSwitch::DEFAULT_DISABLED),
-        extension_action_redesign(
-            switches::kExtensionActionRedesign,
-            FeatureSwitch::DEFAULT_DISABLED),
+        error_console(switches::kErrorConsole, FeatureSwitch::DEFAULT_DISABLED),
+        enable_override_bookmarks_ui(switches::kEnableOverrideBookmarksUI,
+                                     FeatureSwitch::DEFAULT_DISABLED),
+        extension_action_redesign(switches::kExtensionActionRedesign,
+                                  FeatureSwitch::DEFAULT_DISABLED),
         scripts_require_action(switches::kScriptsRequireAction,
                                FeatureSwitch::DEFAULT_DISABLED),
-        embedded_extension_options(
-            switches::kEmbeddedExtensionOptions,
-            FeatureSwitch::DEFAULT_DISABLED),
+        embedded_extension_options(switches::kEmbeddedExtensionOptions,
+                                   FeatureSwitch::DEFAULT_DISABLED),
         mime_handler_view(switches::kMimeHandlerView,
-                          FeatureSwitch::DEFAULT_DISABLED) {}
+                          FeatureSwitch::DEFAULT_DISABLED),
+        trace_app_source(switches::kTraceAppSource,
+                         FeatureSwitch::DEFAULT_DISABLED) {
+  }
 
   // Enables extensions to be easily installed from sites other than the web
   // store.
   FeatureSwitch easy_off_store_install;
 
   FeatureSwitch force_dev_mode_highlighting;
 
   // Should we prompt the user before allowing external extensions to install?
   // Default is yes.
   FeatureSwitch prompt_for_external_extensions;
 
   FeatureSwitch error_console;
   FeatureSwitch enable_override_bookmarks_ui;
   FeatureSwitch extension_action_redesign;
   FeatureSwitch scripts_require_action;
   FeatureSwitch embedded_extension_options;
   FeatureSwitch mime_handler_view;
+  FeatureSwitch trace_app_source;
 };
 
 base::LazyInstance<CommonSwitches> g_common_switches =
     LAZY_INSTANCE_INITIALIZER;
 
 }  // namespace
 
 FeatureSwitch* FeatureSwitch::force_dev_mode_highlighting() {
   return &g_common_switches.Get().force_dev_mode_highlighting;
 }
@@ skipping 14 matching lines @@
 }
 FeatureSwitch* FeatureSwitch::scripts_require_action() {
   return &g_common_switches.Get().scripts_require_action;
 }
 FeatureSwitch* FeatureSwitch::embedded_extension_options() {
   return &g_common_switches.Get().embedded_extension_options;
 }
 FeatureSwitch* FeatureSwitch::mime_handler_view() {
   return &g_common_switches.Get().mime_handler_view;
 }
+FeatureSwitch* FeatureSwitch::trace_app_source() {
+  return &g_common_switches.Get().trace_app_source;
+}
 
 FeatureSwitch::ScopedOverride::ScopedOverride(FeatureSwitch* feature,
                                               bool override_value)
     : feature_(feature),
       previous_value_(feature->GetOverrideValue()) {
   feature_->SetOverrideValue(
       override_value ? OVERRIDE_ENABLED : OVERRIDE_DISABLED);
 }
 
 FeatureSwitch::ScopedOverride::~ScopedOverride() {
@@ skipping 58 matching lines @@
 
 void FeatureSwitch::SetOverrideValue(OverrideValue override_value) {
   override_value_ = override_value;
 }
 
 FeatureSwitch::OverrideValue FeatureSwitch::GetOverrideValue() const {
   return override_value_;
 }
 
 }  // namespace extensions