SkipInstallOperation placeholders

For some devices, some InstallOperations can be skipped during the
update process.  An example is the SOURCE_COPY operation with same
source and destination locations for Virtual A/B devices.
This patch extents the DynamicPartitionControl interface with the
ShouldSkipOperation() method to query if given operation should be
skipped or not.

Bug: 141207436
Test: build
Change-Id: I94dbf1d33d531944e04cb2ffcba274106e866d5d
Signed-off-by: Alessio Balsini <balsini@google.com>
diff --git a/common/dynamic_partition_control_stub.cc b/common/dynamic_partition_control_stub.cc
index 86f75aa..06f6b3c 100644
--- a/common/dynamic_partition_control_stub.cc
+++ b/common/dynamic_partition_control_stub.cc
@@ -32,6 +32,11 @@
   return FeatureFlag(FeatureFlag::Value::NONE);
 }
 
+bool DynamicPartitionControlStub::ShouldSkipOperation(
+    const InstallOperation& operation) {
+  return false;
+}
+
 void DynamicPartitionControlStub::Cleanup() {}
 
 bool DynamicPartitionControlStub::PreparePartitionsForUpdate(