The chrome browser target should not depend on plugins.

ppapi/thunk/interfaces_legacy.h

+// Copyright (c) 2013 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.
+#ifndef LEGACY_IFACE
+#define LEGACY_IFACE(iface_str, function_name)
+#endif
+
+LEGACY_IFACE(PPB_AUDIO_TRUSTED_INTERFACE_0_6,
+             ::ppapi::thunk::GetPPB_AudioTrusted_0_6_Thunk())
+LEGACY_IFACE(PPB_BUFFER_TRUSTED_INTERFACE_0_1,
+             ::ppapi::thunk::GetPPB_BufferTrusted_0_1_Thunk())
+LEGACY_IFACE(PPB_GRAPHICS_3D_TRUSTED_INTERFACE_1_0,
+             ::ppapi::thunk::GetPPB_Graphics3DTrusted_1_0_Thunk())
+LEGACY_IFACE(PPB_IMAGEDATA_TRUSTED_INTERFACE_0_4,
+             ::ppapi::thunk::GetPPB_ImageDataTrusted_0_4_Thunk())
+LEGACY_IFACE(PPB_INPUT_EVENT_INTERFACE_1_0,
+             ::ppapi::thunk::GetPPB_InputEvent_1_0_Thunk())
+LEGACY_IFACE(PPB_INSTANCE_PRIVATE_INTERFACE_0_1,
+             ::ppapi::thunk::GetPPB_Instance_Private_0_1_Thunk())
+LEGACY_IFACE(PPB_CORE_INTERFACE_1_0, &core_interface)
+LEGACY_IFACE(PPB_GPUBLACKLIST_PRIVATE_INTERFACE,
+             PPB_GpuBlacklist_Private_Impl::GetInterface())
+LEGACY_IFACE(PPB_OPENGLES2_INTERFACE,
+             ::ppapi::PPB_OpenGLES2_Shared::GetInterface())
+LEGACY_IFACE(PPB_OPENGLES2_INSTANCEDARRAYS_INTERFACE,
+             ::ppapi::PPB_OpenGLES2_Shared::GetInstancedArraysInterface())
+LEGACY_IFACE(PPB_OPENGLES2_FRAMEBUFFERBLIT_INTERFACE,
+             ::ppapi::PPB_OpenGLES2_Shared::GetFramebufferBlitInterface())
+LEGACY_IFACE(
+    PPB_OPENGLES2_FRAMEBUFFERMULTISAMPLE_INTERFACE,
+    ::ppapi::PPB_OpenGLES2_Shared::GetFramebufferMultisampleInterface())
+LEGACY_IFACE(PPB_OPENGLES2_CHROMIUMENABLEFEATURE_INTERFACE,
+             ::ppapi::PPB_OpenGLES2_Shared::GetChromiumEnableFeatureInterface())
+LEGACY_IFACE(PPB_OPENGLES2_CHROMIUMMAPSUB_INTERFACE,
+             ::ppapi::PPB_OpenGLES2_Shared::GetChromiumMapSubInterface())
+LEGACY_IFACE(PPB_OPENGLES2_CHROMIUMMAPSUB_DEV_INTERFACE_1_0,
+             ::ppapi::PPB_OpenGLES2_Shared::GetChromiumMapSubInterface())
+LEGACY_IFACE(PPB_OPENGLES2_QUERY_INTERFACE,
+             ::ppapi::PPB_OpenGLES2_Shared::GetQueryInterface())
+LEGACY_IFACE(PPB_PROXY_PRIVATE_INTERFACE, PPB_Proxy_Impl::GetInterface())
+LEGACY_IFACE(PPB_UMA_PRIVATE_INTERFACE, PPB_UMA_Private_Impl::GetInterface())
+LEGACY_IFACE(PPB_VAR_DEPRECATED_INTERFACE,
+             PPB_Var_Deprecated_Impl::GetVarDeprecatedInterface())
+LEGACY_IFACE(PPB_VAR_INTERFACE_1_0,
+             ::ppapi::PPB_Var_Shared::GetVarInterface1_0())
+LEGACY_IFACE(PPB_VAR_INTERFACE_1_1,
+             ::ppapi::PPB_Var_Shared::GetVarInterface1_1())
+LEGACY_IFACE(PPB_VAR_ARRAY_BUFFER_INTERFACE_1_0,
+             ::ppapi::PPB_Var_Shared::GetVarArrayBufferInterface1_0())
+
+