Add flag to enable MJPEG acceleration for video capture

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 259 matching lines @@
 
 // Enable antialiasing on 2d canvas clips (as opposed to draw operations)
 const char kEnable2dCanvasClipAntialiasing[] = "enable-2d-canvas-clip-aa";
 
 // Disable partially decoding jpeg images using the GPU.
 // At least YUV decoding will be accelerated when not using this flag.
 // Has no effect unless GPU rasterization is enabled.
 const char kDisableAcceleratedJpegDecoding[] =
     "disable-accelerated-jpeg-decoding";
 
+// Enable hardware acceleration of mjpeg decode for captured frame, where
+// available.
+const char kEnableAcceleratedMjpegDecode[] = "enable-accelerated-mjpeg-decode";
+
 // Enable bleeding-edge code to make Chrome draw content faster. The changes
 // behind this path are very likely to break lots of content.
 // ** DO NOT use this flag unless you know what you are doing. **
 const char kEnableBleedingEdgeRenderingFastPaths[] =
     "enable-bleeding-edge-rendering-fast-paths";
 
 // Enables new cc/animation system (Project Heaviside). crbug.com/394772
 const char kEnableCompositorAnimationTimelines[] =
     "enable-compositor-animation-timelines";
 
@@ skipping 712 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