Eliminate the 'build_ppapi_ipc_proxy_untrusted' build flag for untrusted PPAPI proxy builds.

build/all.gyp

Index: build/all.gyp
===================================================================
--- build/all.gyp	(revision 151201)
+++ build/all.gyp	(working copy)
@@ -160,7 +160,7 @@
           'dependencies': [
             '../base/base_untrusted.gyp:*',
             '../ipc/ipc_untrusted.gyp:*',
-            '../ppapi/ppapi_proxy_untrusted.gyp:*',
+            '../ppapi/ppapi_chrome_proxy_untrusted.gyp:*',
             '../ppapi/ppapi_shared_untrusted.gyp:*',
           ],
         }],
@@ -247,7 +247,7 @@
         ['disable_nacl==0 and disable_nacl_untrusted==0', {
           'dependencies': [
             # TODO(bbudge): drop this when we have switched the NaCl proxy to IPC.

[dmichael (off chromium), 2012/08/14 17:03:31]

Is this TODO still valid? Aren't we going to still have this dependencey?

[bbudge, 2012/08/14 18:35:18]

Actually, now that we have side-by-side builds, we can remove these and add our
'nacl_ipc_irt' target to chrome/nacl.gypi's dependencies.

-            '../ppapi/ppapi_proxy_untrusted.gyp:ppapi_proxy_untrusted',
+            '../ppapi/ppapi_chrome_proxy_untrusted.gyp:ppapi_proxy_untrusted',
           ],
         }],
       ],