Refactor ParseArrayGeometry to use standard Chromium facilities.

content/public/common/content_switches.cc

 // 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 "content/public/common/content_switches.h"
 
 namespace switches {
 
 // The number of MSAA samples for canvas2D. Requires MSAA support by GPU to
 // have an effect. 0 disables MSAA.
@@ skipping 577 matching lines @@
     "main-frame-resizes-are-orientation-changes";
 
 // Sets the width and height above which a composited layer will get tiled.
 const char kMaxUntiledLayerHeight[]         = "max-untiled-layer-height";
 const char kMaxUntiledLayerWidth[]          = "max-untiled-layer-width";
 
 // Sample memory usage with high frequency and store the results to the
 // Renderer.Memory histogram. Used in memory tests.
 const char kMemoryMetrics[]                 = "memory-metrics";
 
+// Whitespace-separated microphone positions using Cartesian coordinates in
+// meters with ordering x, y, z.
+// x: the horizontal dimension, with positive to the right from the camera's
+//    perspective.
+// y: the depth dimension, with positive forward from the camera's perspective.
+// z: the vertical dimension, with positive upwards.
+//
+// Usually, the center of the microphone array will be treated as the origin
+// (often the position of the camera). The string is formatted as:
+// "x1 y1 z1 ... zn yn zn" for an n-microphone array.
+// For example, a two-mic device with 4 cm of horizontal spacing would use:
+// --mic-positions="-0.02 0 0 0.02 0 0"
+const char kMicrophonePositions[]           = "mic-positions";
+
 // Mutes audio sent to the audio device so it is not audible during
 // automated testing.
 const char kMuteAudio[]                     = "mute-audio";
 
 // Don't send HTTP-Referer headers.
 const char kNoReferrers[]                   = "no-referrers";
 
 // Disables the sandbox for all process types that are normally sandboxed.
 const char kNoSandbox[]                     = "no-sandbox";
 
@@ skipping 395 matching lines @@
 // Windows Vista and later.
 const char kTraceExportEventsToETW[] = "trace-export-events-to-etw";
 #endif
 
 // Enables the use of NPAPI plugins.
 const char kEnableNpapiForTesting[] = "enable-npapi-for-testing";
 
 // Don't dump stuff here, follow the same order as the header.
 
 }  // namespace switches