Added a bitexactness test for the voice activity detector in the audio processing module.

webrtc/modules/audio_processing/test/bitexactness_tools.cc

Index: webrtc/modules/audio_processing/test/bitexactness_tools.cc
diff --git a/webrtc/modules/audio_processing/test/bitexactness_tools.cc b/webrtc/modules/audio_processing/test/bitexactness_tools.cc
index 881471145c9f948eb9b1f10d4841da61672b554b..b6f84730e894aaabe8722de0e70d3a374958c376 100644
--- a/webrtc/modules/audio_processing/test/bitexactness_tools.cc
+++ b/webrtc/modules/audio_processing/test/bitexactness_tools.cc
@@ -17,6 +17,29 @@
 namespace webrtc {
 namespace test {
 
+::testing::AssertionResult AssertBoolsNotEqual(const char* m_expr,

[hlundin-webrtc, 2016/03/16 15:50:20]

No, use EXPECT_EQ instead.

[peah-webrtc, 2016/03/18 05:56:05]

Done.

+                                               const char* n_expr,
+                                               const bool& output,
+                                               const bool& reference) {
+  // If the values are deemed not to be similar, return a report of the
+  // difference.
+  if (output != reference) {
+    // Lambda function that produces a string containing the bool name.
+    auto bool_description = [](bool v) {
+      if (v) {
+        return std::string("true");
+      } else {
+        return std::string("false");
+      }
+    };
+
+    return ::testing::AssertionFailure()
+           << "Actual: " << bool_description(output) << std::endl
+           << "Expected: " << bool_description(reference) << std::endl;
+  }
+  return ::testing::AssertionSuccess();
+}
+
 ::testing::AssertionResult AssertIntegersNotEqual(const char* m_expr,
                                                   const char* n_expr,
                                                   const int& output,