Speculative revert to fix ChromeOS PFQ mips builder

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index cd906aa1ea93653e0ed64abf0e361eab1411dd2a..c8b909240d1520ded30a10e8485f5e0dc84f5471 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -85,11 +85,6 @@
           # Enable top chrome material design.
           'enable_topchrome_md%' : 0,
 
-          # Force building against pre-built sysroot image on linux.  By default
-          # the sysroot image is only used for Official builds  or when cross
-          # compiling to arm or mips.
-          'use_sysroot%': 0,
-
           # Override buildtype to select the desired build flavor.
           # Dev - everyday build for development/testing
           # Official - release build (generally implies additional processing)
@@ -182,6 +177,7 @@
 
         # The system root for cross-compiles. Default: none.
         'sysroot%': '',
+        'use_sysroot%': 0,
         'chroot_cmd%': '',
 
         # The system libdir used for this ABI.
@@ -286,27 +282,6 @@
           ['target_arch=="mipsel"', {
             'mips_arch_variant%': 'r1',
           }],
-
-          ['OS=="linux" and target_arch=="arm" and chromeos==0', {
-            # sysroot needs to be an absolute path otherwise it generates
-            # incorrect results when passed to pkg-config
-            'sysroot%': '<!(cd <(DEPTH) && pwd -P)/chrome/installer/linux/debian_wheezy_arm-sysroot',
-          }], # OS=="linux" and target_arch=="arm" and chromeos==0
-
-          ['OS=="linux" and ((branding=="Chrome" and buildtype=="Official" and chromeos==0) or use_sysroot==1)' , {
-            'conditions': [
-              ['target_arch=="x64"', {
-                'sysroot%': '<!(cd <(DEPTH) && pwd -P)/chrome/installer/linux/debian_wheezy_amd64-sysroot',
-              }],
-              ['target_arch=="ia32"', {
-                'sysroot%': '<!(cd <(DEPTH) && pwd -P)/chrome/installer/linux/debian_wheezy_i386-sysroot',
-              }],
-          ],
-          }], # OS=="linux" and branding=="Chrome" and buildtype=="Official" and chromeos==0
-
-          ['OS=="linux" and target_arch=="mipsel"', {
-            'sysroot%': '<!(cd <(DEPTH) && pwd -P)/mipsel-sysroot/sysroot',
-          }],
         ],
       },
 
@@ -958,6 +933,28 @@
           'enable_settings_app%': 0,
         }],
 
+        ['OS=="linux" and target_arch=="arm" and chromeos==0', {
+          # sysroot needs to be an absolute path otherwise it generates
+          # incorrect results when passed to pkg-config
+          'sysroot%': '<!(cd <(DEPTH) && pwd -P)/chrome/installer/linux/debian_wheezy_arm-sysroot',
+        }], # OS=="linux" and target_arch=="arm" and chromeos==0
+
+        ['OS=="linux" and ((branding=="Chrome" and buildtype=="Official" and chromeos==0) or use_sysroot==1)' , {
+          'conditions': [
+            ['target_arch=="x64"', {
+              'sysroot%': '<!(cd <(DEPTH) && pwd -P)/chrome/installer/linux/debian_wheezy_amd64-sysroot',
+            }],
+            ['target_arch=="ia32"', {
+              'sysroot%': '<!(cd <(DEPTH) && pwd -P)/chrome/installer/linux/debian_wheezy_i386-sysroot',
+            }],
+        ],
+        }], # OS=="linux" and branding=="Chrome" and buildtype=="Official" and chromeos==0
+
+        ['OS=="linux" and target_arch=="mipsel"', {
+          'sysroot%': '<!(cd <(DEPTH) && pwd -P)/mipsel-sysroot/sysroot',
+          'CXX%': '<!(cd <(DEPTH) && pwd -P)/mipsel-sysroot/bin/mipsel-linux-gnu-gcc',
+        }],
+
         # Whether tests targets should be run, archived or just have the
         # dependencies verified. All the tests targets have the '_run' suffix,
         # e.g. base_unittests_run runs the target base_unittests. The test
@@ -1012,12 +1009,6 @@
         }, {
           'sas_dll_path%': '<(DEPTH)/third_party/platformsdk_win7/files/redist/x86',
         }],
-
-        ['sysroot!=""', {
-          'pkg-config': '<(DEPTH)/build/linux/pkg-config-wrapper "<(sysroot)" "<(target_arch)" "<(system_libdir)"',
-        }, {
-          'pkg-config': 'pkg-config'
-        }],
       ],
 
       # Setting this to '0' will cause V8's startup snapshot to be
@@ -1118,7 +1109,7 @@
     'chromecast%': '<(chromecast)',
     'enable_viewport%': '<(enable_viewport)',
     'enable_hidpi%': '<(enable_hidpi)',
-    'enable_topchrome_md%': '<(enable_topchrome_md)',
+	'enable_topchrome_md%': '<(enable_topchrome_md)',
     'image_loader_extension%': '<(image_loader_extension)',
     'fastbuild%': '<(fastbuild)',
     'dont_embed_build_metadata%': '<(dont_embed_build_metadata)',
@@ -1129,7 +1120,6 @@
     'arm_neon%': '<(arm_neon)',
     'arm_neon_optional%': '<(arm_neon_optional)',
     'sysroot%': '<(sysroot)',
-    'pkg-config%': '<(pkg-config)',
     'chroot_cmd%': '<(chroot_cmd)',
     'system_libdir%': '<(system_libdir)',
     'component%': '<(component)',
@@ -1608,6 +1598,10 @@
             'nacl_untrusted_build%': 0,
             'use_allocator%': 'none',
           }],
+          ['OS=="linux" and target_arch=="mipsel"', {
+            'sysroot%': '<(sysroot)',
+            'CXX%': '<(CXX)',
+          }],
           # Use a 64-bit linker to avoid running out of address space. The
           # buildbots should have a 64-bit kernel and a 64-bit libc installed.
           ['host_arch=="ia32" and target_arch=="ia32"', {