install-build-deps.sh fixes for Lucid and Chromium OS.

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index fcb61dbf2f4e5efd3406febfe122fc60e7d88a4c..a93b7712724ca2b33550cae894204fa918b0ba23 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -1005,6 +1005,16 @@
                   '-msse2',
                 ],
               }],
+              # Install packages have started cropping up with
+              # different headers between the 32-bit and 64-bit
+              # versions, so we have to shadow those differences off
+              # and make sure a 32-bit-on-64-bit build picks up the
+              # right files.
+              ['host_arch!="ia32"', {
+                'include_dirs+': [
+                  '/usr/include32',
+                ],
+              }],
             ],
             # -mmmx allows mmintrin.h to be used for mmx intrinsics.
             # video playback is mmx and sse2 optimized.