Enable -integrated-as for Clang builds on Linux.

build/common.gypi

 # Copyright (c) 2010 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.
 
 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_chromium,
 # since gyp_chromium is automatically forcing its inclusion.
 {
   'variables': {
     # .gyp files or targets should set chromium_code to 1 if they build
@@ skipping 1150 matching lines @@
               # Clang spots more unused functions.
               '-Wno-unused-function',
               # gtest confuses clang.
               '-Wno-bool-conversions',
               # Don't die on dtoa code that uses a char as an array index.
               '-Wno-char-subscripts',
               # Survive EXPECT_EQ(unnamed_enum, unsigned int) -- see
               # http://code.google.com/p/googletest/source/detail?r=446 .
               # TODO(thakis): Use -isystem instead (http://crbug.com/58751 ).
               '-Wno-unnamed-type-template-args',
-              # The integrated assembler chokes on one ffmpeg file.
-              # http://crbug.com/61931
-              '-no-integrated-as',
             ],
             'cflags!': [
               # Clang doesn't seem to know know this flag.
               '-mfpmath=sse',
             ],
           }],
           ['no_strict_aliasing==1', {
             'cflags': [
               '-fno-strict-aliasing',
             ],
@@ skipping 348 matching lines @@
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }
 
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 # indent-tabs-mode:nil
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