Since we're only using it on Linux now, just require poppler as a system dependency.

The Ubuntu package needed is libpoppler-cpp-dev.

iconv and fontconfig were only used as Poppler dependencies.  bson_c is also unused.

BUG=skia:
R=reed@google.com, rmistry@google.com, borenet@google.com, halcanary@google.com, mtklein@google.com

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/294683003

git-svn-id: http://skia.googlecode.com/svn/trunk@14802 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tools/install_dependencies.sh b/tools/install_dependencies.sh
index 8d75c98..5769602 100755
--- a/tools/install_dependencies.sh
+++ b/tools/install_dependencies.sh
@@ -8,11 +8,14 @@
 # dependencies using your system's package manager.  If your system is
 # not supported, add logic here to support it.
 
+set -e
+
 if command -v lsb_release > /dev/null ; then
     case $(lsb_release -i -s) in
         Ubuntu)
             sudo apt-get install \
                 build-essential \
+		libpoppler-cpp-dev \
 		libfreetype6-dev \
 		libfontconfig-dev \
 		libpng12-dev \