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/gyp/gm.gyp b/gyp/gm.gyp
index a4ec604..b727afb 100644
--- a/gyp/gm.gyp
+++ b/gyp/gm.gyp
@@ -76,7 +76,7 @@
         }],
         ['skia_poppler_enabled', {
           'dependencies': [
-            'poppler.gyp:libpoppler-cpp-gpl',
+            'poppler.gyp:*',
           ],
           'defines': [
             'SK_BUILD_POPPLER',