Remove all the browser side extensions code from Android.

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 19f9ae160048bcce3e5fb72b41b42010b82179ab..cbf25d4a6b8a910cb98f40bec437666dd4189d5b 100644
--- a/chrome/browser/browser_process_impl.cc
+++ b/chrome/browser/browser_process_impl.cc
@@ -35,7 +35,6 @@
 #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/first_run/upgrade_util.h"
 #include "chrome/browser/gpu/gl_string_manager.h"
 #include "chrome/browser/gpu/gpu_mode_manager.h"
@@ -123,6 +122,7 @@
 #endif  // defined(ENABLE_CONFIGURATION_POLICY)
 
 #if defined(ENABLE_EXTENSIONS)
+#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/media_galleries/media_file_system_registry.h"
@@ -196,7 +196,6 @@ BrowserProcessImpl::BrowserProcessImpl(
 
   extension_event_router_forwarder_ = new extensions::EventRouterForwarder;
   ExtensionRendererState::GetInstance()->Init();
-#endif
 
   extensions::ExtensionsClient::Set(
       extensions::ChromeExtensionsClient::GetInstance());
@@ -204,6 +203,7 @@ BrowserProcessImpl::BrowserProcessImpl(
   extensions_browser_client_.reset(
       new extensions::ChromeExtensionsBrowserClient);
   extensions::ExtensionsBrowserClient::Set(extensions_browser_client_.get());
+#endif
 
   message_center::MessageCenter::Initialize();