Mac Overlays: Allow SolidColor and Tile quads to be candidates for overlays.

cc/resources/resource_provider.cc

Index: cc/resources/resource_provider.cc
diff --git a/cc/resources/resource_provider.cc b/cc/resources/resource_provider.cc
index 083b4868a5de1b2a970a1bdb99dbbc16fbac1e3f..b52df401fada0982c5fc248ed90f10323907538e 100644
--- a/cc/resources/resource_provider.cc
+++ b/cc/resources/resource_provider.cc
@@ -876,6 +876,18 @@ ResourceProvider::ScopedWriteLockSoftware::~ScopedWriteLockSoftware() {
   resource_provider_->UnlockForWrite(resource_);
 }
 
+ResourceProvider::ScopedReadLockGpuMemoryBuffer::ScopedReadLockGpuMemoryBuffer(
+    ResourceProvider* resource_provider,
+    ResourceId resource_id)
+    : resource_provider_(resource_provider), resource_id_(resource_id) {
+  const Resource* resource = resource_provider->GetResource(resource_id);
+  image_id_ = resource->image_id;
+}
+
+ResourceProvider::ScopedReadLockGpuMemoryBuffer::
+    ~ScopedReadLockGpuMemoryBuffer() {
+}
+
 ResourceProvider::ScopedWriteLockGpuMemoryBuffer::
     ScopedWriteLockGpuMemoryBuffer(ResourceProvider* resource_provider,
                                    ResourceId resource_id)