Move SharedMemoryLimits out of WebGraphicsContext3DCommandBufferImpl.

cc/raster/tile_task_worker_pool_perftest.cc

Index: cc/raster/tile_task_worker_pool_perftest.cc
diff --git a/cc/raster/tile_task_worker_pool_perftest.cc b/cc/raster/tile_task_worker_pool_perftest.cc
index 04922d68028d1edd346ad01ab4b6e9701a76e224..0649f77de50584a72bdbc1a061c5cb2018b56f3d 100644
--- a/cc/raster/tile_task_worker_pool_perftest.cc
+++ b/cc/raster/tile_task_worker_pool_perftest.cc
@@ -75,10 +75,10 @@ class PerfContextProvider : public ContextProvider {
   PerfContextProvider() : context_gl_(new PerfGLES2Interface) {}
 
   bool BindToCurrentThread() override { return true; }
-  Capabilities ContextCapabilities() override {
-    Capabilities capabilities;
-    capabilities.gpu.image = true;
-    capabilities.gpu.sync_query = true;
+  gpu::Capabilities ContextCapabilities() override {
+    gpu::Capabilities capabilities;
+    capabilities.image = true;
+    capabilities.sync_query = true;
     return capabilities;
   }
   gpu::gles2::GLES2Interface* ContextGL() override { return context_gl_.get(); }