Extensions: Split extensions utility IPC messages into its own file.

chrome/browser/browser_process_impl.cc

Index: chrome/browser/browser_process_impl.cc
diff --git a/chrome/browser/browser_process_impl.cc b/chrome/browser/browser_process_impl.cc
index 7f492c575c22e6ae13b52c0ff07ba29c145f9eb6..510127cbf424e86ac9a332953a8cd3fff60b27ea 100644
--- a/chrome/browser/browser_process_impl.cc
+++ b/chrome/browser/browser_process_impl.cc
@@ -34,7 +34,6 @@
 #include "chrome/browser/devtools/remote_debugging_server.h"
 #include "chrome/browser/download/download_request_limiter.h"
 #include "chrome/browser/download/download_status_updater.h"
-#include "chrome/browser/extensions/chrome_extensions_browser_client.h"
 #include "chrome/browser/extensions/event_router_forwarder.h"
 #include "chrome/browser/extensions/extension_renderer_state.h"
 #include "chrome/browser/first_run/upgrade_util.h"
@@ -69,7 +68,6 @@
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
-#include "chrome/common/extensions/chrome_extensions_client.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/switch_utils.h"
 #include "chrome/common/url_constants.h"
@@ -125,6 +123,11 @@
 #include "components/policy/core/common/policy_service_stub.h"
 #endif  // defined(ENABLE_CONFIGURATION_POLICY)
 
+#if defined(ENABLE_EXTENSIONS)
+#include "chrome/browser/extensions/chrome_extensions_browser_client.h"
+#include "chrome/common/extensions/chrome_extensions_client.h"
+#endif
+
 #if defined(ENABLE_PLUGIN_INSTALLATION)
 #include "chrome/browser/plugins/plugins_resource_service.h"
 #endif
@@ -189,14 +192,12 @@ BrowserProcessImpl::BrowserProcessImpl(
 
 #if defined(ENABLE_EXTENSIONS)
   apps::AppsClient::Set(ChromeAppsClient::GetInstance());
-#endif
-
-  extensions::ExtensionsClient::Set(
-      extensions::ChromeExtensionsClient::GetInstance());
-
   extensions_browser_client_.reset(
       new extensions::ChromeExtensionsBrowserClient);
   extensions::ExtensionsBrowserClient::Set(extensions_browser_client_.get());
+  extensions::ExtensionsClient::Set(
+      extensions::ChromeExtensionsClient::GetInstance());
+#endif
 
   extension_event_router_forwarder_ = new extensions::EventRouterForwarder;
   ExtensionRendererState::GetInstance()->Init();