Add a gyp flag to allow removing dependency on ppapi.

content/browser/renderer_host/render_process_host_impl.cc

 // Copyright (c) 2012 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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 549 matching lines @@
       new IndexedDBDispatcherHost(
           GetID(),
           storage_partition_impl_->GetIndexedDBContext()));
   channel_->AddFilter(GeolocationDispatcherHost::New(
       GetID(), browser_context->GetGeolocationPermissionContext()));
   gpu_message_filter_ = new GpuMessageFilter(GetID(), widget_helper_.get());
   channel_->AddFilter(gpu_message_filter_);
 #if defined(ENABLE_WEBRTC)
   channel_->AddFilter(new MediaStreamDispatcherHost(GetID()));
 #endif
+#if defined(ENABLE_PPAPI)
   channel_->AddFilter(
       GetContentClient()->browser()->AllowPepperPrivateFileAPI() ?
           new PepperUnsafeFileMessageFilter(
               GetID(),
               storage_partition_impl_->GetPath()) :
           new PepperFileMessageFilter(GetID()));
   channel_->AddFilter(new PepperMessageFilter(PepperMessageFilter::RENDERER,
                                               GetID(), browser_context));
+#endif
 #if defined(ENABLE_INPUT_SPEECH)
   channel_->AddFilter(new InputTagSpeechDispatcherHost(
       GetID(), storage_partition_impl_->GetURLRequestContext(),
       browser_context->GetSpeechRecognitionPreferences()));
   channel_->AddFilter(new SpeechRecognitionDispatcherHost(
       GetID(), storage_partition_impl_->GetURLRequestContext(),
       browser_context->GetSpeechRecognitionPreferences()));
 #endif
   channel_->AddFilter(new FileAPIMessageFilter(
       GetID(),
@@ skipping 1015 matching lines @@
       int32 gpu_process_host_id) {
   TRACE_EVENT0("renderer_host",
                "RenderWidgetHostImpl::OnCompositorSurfaceBuffersSwappedNoHost");
   RenderWidgetHostImpl::AcknowledgeBufferPresent(route_id,
                                                  gpu_process_host_id,
                                                  false,
                                                  0);
 }
 
 }  // namespace content