Fix dependency issue with install-build-deps.sh on Trusty

Trusty seems to have dificulty installing gcc-arm-linux-gnueabihf
and gcc-4.8-multilib without these extra packages being listed
on the install line also.

BUG=435056

Review URL: https://codereview.chromium.org/1049833003

Cr-Commit-Position: refs/heads/master@{#323281}
diff --git a/build/install-build-deps.sh b/build/install-build-deps.sh
index def9afc..6473794d 100755
--- a/build/install-build-deps.sh
+++ b/build/install-build-deps.sh
@@ -155,6 +155,12 @@
           linux-libc-dev-armhf-cross
           g++-arm-linux-gnueabihf"
 
+# Work around for dependency issue Ubuntu/Trusty: http://crbug.com/435056
+if [ "x$lsb_release" = "xtrusty" ]; then
+  arm_list+=" g++-4.8-multilib-arm-linux-gnueabihf
+              gcc-4.8-multilib-arm-linux-gnueabihf"
+fi
+
 # Packages to build NaCl, its toolchains, and its ports.
 naclports_list="ant autoconf bison cmake gawk intltool xutils-dev xsltproc"
 nacl_list="g++-mingw-w64-i686 lib32z1-dev