Use clang by default for mips builds

build/common.gypi

 # 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.
 
 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_chromium,
 # since gyp_chromium is automatically forcing its inclusion.
 {
   # Variables expected to be overriden on the GYP command line (-D) or by
   # ~/.gyp/include.gypi.
@@ skipping 1831 matching lines @@
             'arm_arch%': '',
             'arm_tune%': 'cortex-a9',
             'arm_thumb%': 1,
             'video_hole%': 1,
           }],
         ],
       }],
       ['chromecast==1 and OS!="android"', {
         'ozone_platform_cast%': 1
       }],
-      ['OS=="linux" and target_arch!="mipsel"', {
+      ['OS=="linux"', {
         'clang%': 1,
       }],  # OS=="mac"
       ['OS=="mac"', {
         'conditions': [
           # All Chrome builds have breakpad symbols, but only process the
           # symbols from official builds.
           ['(branding=="Chrome" and buildtype=="Official")', {
             'mac_strip_release%': 1,
           }],
         ],
@@ skipping 487 matching lines @@
         ],
         'arm_thumb%': 1,
       }],
 
       # Set default compiler flags for MIPS floating-point support.
       ['target_arch=="mipsel"', {
         'mips_float_abi%': 'hard',
       }],
       ['target_arch=="mipsel" and mips_arch_variant=="r2"', {
         'mips_fpu_mode%': 'fp32',
+      }, {
+        'mips_fpu_mode%': '',
       }],
 
       # Enable brlapi by default for chromeos.
       ['chromeos==1', {
         'use_brlapi%': 1,
       }],
 
       ['use_ozone==1 and ozone_auto_platforms==1', {
         # Use test as the default platform.
         'ozone_platform%': 'test',
@@ skipping 3875 matching lines @@
     # settings in target dicts.  SYMROOT is a special case, because many other
     # Xcode variables depend on it, including variables such as
     # PROJECT_DERIVED_FILE_DIR.  When a source group corresponding to something
     # like PROJECT_DERIVED_FILE_DIR is added to a project, in order for the
     # files to appear (when present) in the UI as actual files and not red
     # red "missing file" proxies, the correct path to PROJECT_DERIVED_FILE_DIR,
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }