content: Remove unused speex related code.

BUILD.gn

 # 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.
 
 # This is the root build file for GN. GN will start processing by loading this
 # file, and recursively load all dependencies until all dependencies are either
 # resolved or known not to exist (which will cause the build to fail). So if
 # you add a new build file, there must be some path of dependencies from this
 # file to your new one or GN won't know about it.
 
@@ skipping 218 matching lines @@
 
       # TODO(GYP): Are these needed, or will they be pulled in automatically?
       "//third_party/android_tools:android_gcm_java",
       "//third_party/android_tools:uiautomator_java",
       "//third_party/android_tools:android_support_v13_java",
       "//third_party/android_tools:android_support_v7_appcompat_java",
       "//third_party/android_tools:android_support_v7_mediarouter_java",
       "//third_party/mesa",
       "//third_party/mockito:mockito_java",
       "//third_party/openmax_dl/dl",
-      "//third_party/speex",
       "//ui/android:ui_java",
 
       # TODO(GYP): Are these needed?
       "//chrome/test:test_support_unit",
       "//third_party/smhasher:murmurhash3",
       "//ui/message_center:test_support",
     ]
     deps -= [
       "//chrome",  # TODO(GYP) ??
       "//chrome/test:browser_tests",  # TODO(GYP) ??
@@ skipping 269 matching lines @@
       "//pdf",
       "//storage/browser",
       "//third_party/brotli",
       "//third_party/flac",
       "//third_party/hunspell",
       "//third_party/iccjpeg",
       "//third_party/libphonenumber",
       "//third_party/ots",
       "//third_party/qcms",
       "//third_party/smhasher:murmurhash3",
-      "//third_party/speex",
       "//third_party/webrtc/system_wrappers",
       "//ui/native_theme",
       "//ui/snapshot",
       "//ui/surface",
     ]
 
     # TODO(dpranke): These are as-yet untriaged but need at least the above.
     deps -= [
       "//chrome",  # TODO(GYP)
       "//chrome/test:browser_tests",  # TODO(GYP)
@@ skipping 377 matching lines @@
       "//ui/views:views_unittests",  # TooltipControllerTest failures
       "//ui/wm:wm_unittests",  # PASSES 4/21/2015
       "//url:url_unittests",  # PASSES 4/17/2015
 
       # TODO(GYP) nacl_integration
       # TODO(GYP) telemetry_perf_unittests
       # TODO(GYP) telemetry_unittests
     ]
   }
 }