Use GSC0 instead of GSC1 for video encoding.

BUG=368775
TEST=Casting WebRTC works on daisy and peach_pit

Review URL: https://codereview.chromium.org/880643004

Cr-Commit-Position: refs/heads/master@{#313367}

content/common/gpu/media/generic_v4l2_video_device.cc

@@ -39,7 +39,7 @@ namespace content {
 namespace {
 const char kDecoderDevice[] = "/dev/video-dec";
 const char kEncoderDevice[] = "/dev/video-enc";
-const char kImageProcessorDevice[] = "/dev/gsc1";
+const char kImageProcessorDevice[] = "/dev/gsc0";
 }
 
 GenericV4L2Device::GenericV4L2Device(Type type)

content/common/sandbox_linux/bpf_cros_arm_gpu_policy_linux.cc

@@ -60,10 +60,10 @@ void AddArmMaliGpuWhitelist(std::vector<BrokerFilePermission>* permissions) {
   static const char kMali0Path[] = "/dev/mali0";
 
   // Video processor used on ARM Exynos platforms.
-  static const char kDevGsc1Path[] = "/dev/gsc1";
+  static const char kDevGsc0Path[] = "/dev/gsc0";
 
   permissions->push_back(BrokerFilePermission::ReadWrite(kMali0Path));
-  permissions->push_back(BrokerFilePermission::ReadWrite(kDevGsc1Path));
+  permissions->push_back(BrokerFilePermission::ReadWrite(kDevGsc0Path));
 }
 
 void AddArmGpuWhitelist(std::vector<BrokerFilePermission>* permissions) {