Generate Breakpad symbols for Remoting Host plugin on Mac.

remoting/remoting.gyp

Index: remoting/remoting.gyp
diff --git a/remoting/remoting.gyp b/remoting/remoting.gyp
index 1c07e3cc03ecddf2f14184966edabe51436f4946..02a1162a61e746253a7733f3f92e39e0f08b8bb4 100644
--- a/remoting/remoting.gyp
+++ b/remoting/remoting.gyp
@@ -202,7 +202,15 @@
           'mac_bundle_resources!': [
             'host/plugin/host_plugin-Info.plist',
           ],
-        }],
+          'conditions': [
+            ['mac_breakpad==1', {
+              'variables': {
+                # A real .dSYM is needed for dump_syms to operate on.
+                'mac_real_dsym': 1,
+              },
+            }],
+          ],  # conditions
+        }],  # OS=="mac"
         ['OS!="win"', {
           'sources!': [
             'host/plugin/host_plugin.def',