gpu: Remove Create/DeleteImage IPC by adding an X11_PIXMAP_BUFFER GpuMemoryBuffer type.

content/common/gpu/gpu_command_buffer_stub.cc

Index: content/common/gpu/gpu_command_buffer_stub.cc
diff --git a/content/common/gpu/gpu_command_buffer_stub.cc b/content/common/gpu/gpu_command_buffer_stub.cc
index 3795fa7acf1e09a2c7472093ce1e3d2967cee6c1..029624512869f1b2bad57c4a63ba78cb7059e9fe 100644
--- a/content/common/gpu/gpu_command_buffer_stub.cc
+++ b/content/common/gpu/gpu_command_buffer_stub.cc
@@ -928,23 +928,37 @@ void GpuCommandBufferStub::OnSetClientHasMemoryAllocationChangedCallback(
 
 void GpuCommandBufferStub::OnRegisterGpuMemoryBuffer(
     int32 id,
-    gfx::GpuMemoryBufferHandle gpu_memory_buffer,
+    gfx::GpuMemoryBufferHandle handle,
     uint32 width,
     uint32 height,
     uint32 internalformat) {
   TRACE_EVENT0("gpu", "GpuCommandBufferStub::OnRegisterGpuMemoryBuffer");
+
+  // Verify that renderer is not trying to use a buffer it doesn't own.
+  switch (handle.type) {
 #if defined(OS_ANDROID)
-  // Verify that renderer is not trying to use a surface texture it doesn't own.
-  if (gpu_memory_buffer.type == gfx::SURFACE_TEXTURE_BUFFER &&
-      gpu_memory_buffer.surface_texture_id.secondary_id !=
-          channel()->client_id()) {
-    LOG(ERROR) << "Illegal surface texture ID for renderer.";
-    return;
-  }
+    case gfx::SURFACE_TEXTURE_BUFFER:
+      if (handle.surface_texture_id.secondary_id != channel()->client_id()) {
+        LOG(ERROR) << "Illegal surface texture ID for renderer.";
+        return;
+      }
+      break;
 #endif
+#if defined(USE_X11)
+    case gfx::X11_PIXMAP_BUFFER:
+      if (handle.global_id.secondary_id != channel()->client_id()) {
+        LOG(ERROR) << "Illegal global ID for renderer.";
+        return;
+      }
+      break;
+#endif
+    default:
+      break;
+  }
+
   if (gpu_control_service_) {
     gpu_control_service_->RegisterGpuMemoryBuffer(
-        id, gpu_memory_buffer, width, height, internalformat);
+        id, handle, width, height, internalformat);
   }
 }