Mark ChromeViewHostMsg_DetailedConsoleMessageAdded as extensions-only.

chrome/chrome_renderer.gypi

Index: chrome/chrome_renderer.gypi
diff --git a/chrome/chrome_renderer.gypi b/chrome/chrome_renderer.gypi
index 2ce10d13638d574c08a9f18d3200cf3d19a2dc5a..d8ab6f3a8e0f94b52d2e6dfe760a431db6df8f29 100644
--- a/chrome/chrome_renderer.gypi
+++ b/chrome/chrome_renderer.gypi
@@ -60,6 +60,8 @@
         'renderer/extensions/chrome_extension_helper.h',
         'renderer/extensions/chrome_extensions_dispatcher_delegate.cc',
         'renderer/extensions/chrome_extensions_dispatcher_delegate.h',
+        'renderer/extensions/chrome_extensions_render_frame_observer.cc',
+        'renderer/extensions/chrome_extensions_render_frame_observer.h',
         'renderer/extensions/chrome_extensions_renderer_client.cc',
         'renderer/extensions/chrome_extensions_renderer_client.h',
         'renderer/extensions/chrome_v8_context.cc',
@@ -315,6 +317,12 @@
             ['exclude', '^renderer/safe_browsing/'],
           ],
         }],
+        ['enable_extensions==0', {
+          'sources!': [
+            'renderer/extensions/chrome_extensions_render_frame_observer.cc',
+            'renderer/extensions/chrome_extensions_render_frame_observer.h',
+          ],
+        }],
         ['enable_webrtc==0', {
           'sources!': [
             'renderer/extensions/cast_streaming_native_handler.cc',