Remove dead code paths around PIXEL_STORAGE_TEXTURE in capture pipeline.

content/browser/renderer_host/media/video_capture_controller.cc

Index: content/browser/renderer_host/media/video_capture_controller.cc
diff --git a/content/browser/renderer_host/media/video_capture_controller.cc b/content/browser/renderer_host/media/video_capture_controller.cc
index 01a77723e4ea50b4a12734baeffe1f3a06f384b7..f29c1abd18fe368b7edad12dc0dab800426150b1 100644
--- a/content/browser/renderer_host/media/video_capture_controller.cc
+++ b/content/browser/renderer_host/media/video_capture_controller.cc
@@ -19,7 +19,6 @@
 #include "content/common/gpu/client/gl_helper.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/common/content_switches.h"
-#include "gpu/command_buffer/common/mailbox_holder.h"
 #include "media/base/video_frame.h"
 
 #if !defined(OS_ANDROID)
@@ -438,7 +437,8 @@ void VideoCaptureController::DoNewBufferOnIOThread(
   DCHECK_EQ(frame->format(), media::PIXEL_FORMAT_I420);
   if (frame->storage_type() == media::VideoFrame::STORAGE_GPU_MEMORY_BUFFERS) {
     std::vector<gfx::GpuMemoryBufferHandle> handles;
-    for (size_t i = 0; i < media::VideoFrame::NumPlanes(frame->format()); ++i) {
+    const size_t num_planes = media::VideoFrame::NumPlanes(frame->format());
+    for (size_t i = 0; i < num_planes; ++i) {
       gfx::GpuMemoryBufferHandle remote_handle;
       buffer_pool_->ShareToProcess2(buffer_id, i, client->render_process_handle,
                                     &remote_handle);