Revert 142482 - Add untrusted NaCl build for PPAPI proxy.

This patch refactors ppapi_shared.gypi and ppapi_proxy.gypi into proper includes, adds ppapi_shared_untrusted and ppapi_proxy_untrusted .gyp files, and integrates them into the nacl_irt build (ppapi/native_client/native_client.gyp). In order to build without link errors, it includes our plugin side initialization of PluginDispatcher, and a PpapiPluginMain definition. When the 'build_ppapi_ipc_proxy_untrusted' gyp flag is set to '1', this will build a working NaCl IRT using the Chrome IPC proxy.
BUG=116317
TEST=compiles, runs HelloWorld and GetURL SDK examples.

Review URL: https://chromiumcodereview.appspot.com/10546140

TBR=bbudge@chromium.org
Review URL: https://chromiumcodereview.appspot.com/10565012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@142494 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 57 insertions, 3 deletions

diff --git a/base/base.gypi b/base/base.gypi
index 22aeda7..2f01f53 100644
--- a/base/base.gypi
+++ b/base/base.gypi
@@ -286,6 +286,7 @@
           'property_bag.h',
           'rand_util.cc',
           'rand_util.h',
+          'rand_util_nacl.cc',
           'rand_util_posix.cc',
           'rand_util_win.cc',
           'safe_strerror_posix.cc',
@@ -524,8 +525,6 @@
                'process_posix.cc',
                'process_util.cc',
                'process_util_posix.cc',
-               'rand_util.cc',
-               'rand_util_posix.cc',
                'scoped_native_library.cc',
                'scoped_temp_dir.cc',
                'shared_memory_posix.cc',
diff --git a/base/base_untrusted.gyp b/base/base_untrusted.gyp
index 44baaa1..16aef58 100644
--- a/base/base_untrusted.gyp
+++ b/base/base_untrusted.gyp
@@ -11,7 +11,7 @@
     'base.gypi',
   ],
   'conditions': [
-    ['disable_nacl==0 and disable_nacl_untrusted==0', {
+    ['disable_nacl_untrusted==0', {
       'targets': [
         {
           'target_name': 'base_untrusted',
@@ -32,6 +32,8 @@
           },
           'dependencies': [
             '<(DEPTH)/native_client/tools.gyp:prep_toolchain',
+            '<(DEPTH)/native_client/src/untrusted/pthread/pthread.gyp:pthread_lib',
+            '<(DEPTH)/native_client/src/untrusted/nacl/nacl.gyp:nacl_lib_newlib',
           ],
         },
       ],
diff --git a/base/rand_util_nacl.cc b/base/rand_util_nacl.cc
new file mode 100644
index 0000000..718da05
--- /dev/null
+++ b/base/rand_util_nacl.cc
@@ -0,0 +1,53 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/rand_util.h"
+
+#include "base/lazy_instance.h"
+#include "base/logging.h"
+
+// TODO(bbudge) Replace this with a proper system header file when NaCl
+// provides one.
+#include "native_client/src/untrusted/irt/irt.h"
+
+namespace {
+
+// Create a wrapper class so we can cache the NaCl random number interface.
+class URandomInterface {
+ public:
+  URandomInterface() {
+    size_t result = nacl_interface_query(NACL_IRT_RANDOM_v0_1,
+                                         &interface_,
+                                         sizeof(interface_));
+    DCHECK_EQ(result, sizeof(interface_)) << "Can't get random interface.";
+  }
+
+  uint64 get_random_bytes() const {
+    size_t nbytes;
+    uint64 result;
+    int error = interface_.get_random_bytes(&result,
+                                            sizeof(result),
+                                            &nbytes);
+    DCHECK_EQ(error, 0);
+    DCHECK_EQ(nbytes, sizeof(result));
+    return result;
+  }
+
+ private:
+  struct nacl_irt_random interface_;
+};
+
+base::LazyInstance<URandomInterface> g_urandom_interface =
+    LAZY_INSTANCE_INITIALIZER;
+
+}  // namespace
+
+namespace base {
+
+uint64 RandUint64() {
+  return g_urandom_interface.Pointer()->get_random_bytes();
+}
+
+}  // namespace base
+