MediaRecorder: exporting WebMediaRecorderHandler.h and adding dummy WebMediaRecorderHandler.cpp

public/BUILD.gn

 # Copyright 2014 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.
 
 import("//tools/grit/grit_rule.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
 
@@ skipping 110 matching lines @@
     "platform/WebContentDecryptionModuleAccess.h",
     "platform/WebExternalTextureLayerClient.h",
     "platform/WebThemeEngine.h",
     "platform/WebServiceWorkerResponse.h",
     "platform/WebDragData.h",
     "platform/WebCString.h",
     "platform/WebCompositorAnimationPlayer.h",
     "platform/WebPrivateOwnPtr.h",
     "platform/WebHTTPHeaderVisitor.h",
     "platform/WebScrollbar.h",
+    "platform/WebMediaRecorder.h",

[Nico, 2015/09/10 21:49:04]

You probably need to add this to some .gyp file too

[mcasas, 2015/09/10 22:03:50]

None of the other platform/* seem to need any explicit exporting
in a .gyp(i) file (e.g. WebCompositorAnimationPlayer, 
WebServiceWorkerResponse, WebMediaStream), I think relying 
on Source//platform/blink_platform.gypi for transitive export.

     "platform/WebMediaStream.h",
     "platform/WebServiceWorkerRegistration.h",
     "platform/WebRect.h",
     "platform/WebPageScheduler.h",
     "platform/WebFrameScheduler.h",
     "platform/WebTaskRunner.h",
     "platform/WebThread.h",
     "platform/WebSetSinkIdError.h",
     "platform/WebCallbacks.h",
     "platform/WebInbandTextTrack.h",
@@ skipping 508 matching lines @@
 grit("image_resources") {
   output_dir = "$root_gen_dir/blink/public/resources"
   use_qualified_include = true
   source = "blink_image_resources.grd"
   outputs = [
     "grit/blink_image_resources.h",
     "blink_image_resources_100_percent.pak",
     "blink_image_resources_200_percent.pak",
   ]
 }