Change image processor name from /dev/gsc0 to /dev/image-proc0.

Another platform will have image processor. Change the device
name of image processor to more generic.

BUG=chrome-os-partner:38980
TEST=Test apprtc loopback on peach pit.

Review URL: https://codereview.chromium.org/1156803004

Cr-Commit-Position: refs/heads/master@{#333674}

content/common/gpu/media/generic_v4l2_device.cc

@@ -36,7 +36,7 @@ namespace content {
 namespace {
 const char kDecoderDevice[] = "/dev/video-dec";
 const char kEncoderDevice[] = "/dev/video-enc";
-const char kImageProcessorDevice[] = "/dev/gsc0";
+const char kImageProcessorDevice[] = "/dev/image-proc0";
 }
 
 GenericV4L2Device::GenericV4L2Device(Type type)

content/common/sandbox_linux/bpf_cros_arm_gpu_policy_linux.cc

@@ -59,11 +59,11 @@ void AddArmMaliGpuWhitelist(std::vector<BrokerFilePermission>* permissions) {
   // Device file needed by the ARM GPU userspace.
   static const char kMali0Path[] = "/dev/mali0";
 
-  // Video processor used on ARM Exynos platforms.
-  static const char kDevGsc0Path[] = "/dev/gsc0";
+  // Image processor used on ARM platforms.
+  static const char kDevImageProc0Path[] = "/dev/image-proc0";
 
   permissions->push_back(BrokerFilePermission::ReadWrite(kMali0Path));
-  permissions->push_back(BrokerFilePermission::ReadWrite(kDevGsc0Path));
+  permissions->push_back(BrokerFilePermission::ReadWrite(kDevImageProc0Path));
 }
 
 void AddArmGpuWhitelist(std::vector<BrokerFilePermission>* permissions) {