Revert "AAPT2: Auto-version adaptive-icon XML"

This reverts commit 5b7337f77cf036dda2c7218ccf22dedc774dcf76.

Bug: 63579299
Test: none
Change-Id: Ib617c4edfc16eeae3507b59b2debeae4f8bbf9a5
diff --git a/tools/aapt2/link/AutoVersioner.cpp b/tools/aapt2/link/AutoVersioner.cpp
index 4ac70d9..f80c6e9 100644
--- a/tools/aapt2/link/AutoVersioner.cpp
+++ b/tools/aapt2/link/AutoVersioner.cpp
@@ -34,19 +34,6 @@
   return sdk_version_to_generate < FindNextApiVersionForConfig(entry, config);
 }
 
-ApiVersion FindNextApiVersionForConfigInSortedVector(
-    std::vector<std::unique_ptr<ResourceConfigValue>>::const_iterator start,
-    std::vector<std::unique_ptr<ResourceConfigValue>>::const_iterator end) {
-  const ConfigDescription start_config = (*start)->config.CopyWithoutSdkVersion();
-  ++start;
-  if (start != end) {
-    if ((*start)->config.CopyWithoutSdkVersion() == start_config) {
-      return static_cast<ApiVersion>((*start)->config.sdkVersion);
-    }
-  }
-  return std::numeric_limits<ApiVersion>::max();
-}
-
 ApiVersion FindNextApiVersionForConfig(const ResourceEntry* entry,
                                        const ConfigDescription& config) {
   const auto end_iter = entry->values.end();
@@ -59,7 +46,25 @@
 
   // The source config came from this list, so it should be here.
   CHECK(iter != entry->values.end());
-  return FindNextApiVersionForConfigInSortedVector(iter, end_iter);
+  ++iter;
+
+  // The next configuration either only varies in sdkVersion, or it is completely different
+  // and therefore incompatible. If it is incompatible, we must generate the versioned resource.
+
+  // NOTE: The ordering of configurations takes sdkVersion as higher precedence than other
+  // qualifiers, so we need to iterate through the entire list to be sure there
+  // are no higher sdk level versions of this resource.
+  ConfigDescription temp_config(config);
+  for (; iter != end_iter; ++iter) {
+    temp_config.sdkVersion = (*iter)->config.sdkVersion;
+    if (temp_config == (*iter)->config) {
+      // The two configs are the same, return the sdkVersion.
+      return (*iter)->config.sdkVersion;
+    }
+  }
+
+  // Didn't find another config with a different sdk version, so return the highest possible value.
+  return std::numeric_limits<ApiVersion>::max();
 }
 
 bool AutoVersioner::Consume(IAaptContext* context, ResourceTable* table) {
diff --git a/tools/aapt2/link/AutoVersioner_test.cpp b/tools/aapt2/link/AutoVersioner_test.cpp
index 88a831b..49639f8 100644
--- a/tools/aapt2/link/AutoVersioner_test.cpp
+++ b/tools/aapt2/link/AutoVersioner_test.cpp
@@ -42,8 +42,8 @@
 
   ResourceEntry entry("foo");
   entry.values.push_back(util::make_unique<ResourceConfigValue>(ConfigDescription::DefaultConfig(), ""));
-  entry.values.push_back(util::make_unique<ResourceConfigValue>(v21_config, ""));
   entry.values.push_back(util::make_unique<ResourceConfigValue>(sw600dp_v13_config, ""));
+  entry.values.push_back(util::make_unique<ResourceConfigValue>(v21_config, ""));
 
   EXPECT_TRUE(ShouldGenerateVersionedResource(&entry, ConfigDescription::DefaultConfig(), 17));
   EXPECT_FALSE(ShouldGenerateVersionedResource(&entry, ConfigDescription::DefaultConfig(), 22));
diff --git a/tools/aapt2/link/Linkers.h b/tools/aapt2/link/Linkers.h
index 493b6b1..5527f90 100644
--- a/tools/aapt2/link/Linkers.h
+++ b/tools/aapt2/link/Linkers.h
@@ -23,7 +23,6 @@
 #include "android-base/macros.h"
 
 #include "Resource.h"
-#include "ResourceTable.h"
 #include "SdkConstants.h"
 #include "process/IResourceTableConsumer.h"
 #include "xml/XmlDom.h"
@@ -42,19 +41,17 @@
   ResourceNameRef resource;
 };
 
-// Determines whether a versioned resource should be created. If a versioned resource already
-// exists, it takes precedence.
+/**
+ * Determines whether a versioned resource should be created. If a versioned
+ * resource already exists, it takes precedence.
+ */
 bool ShouldGenerateVersionedResource(const ResourceEntry* entry, const ConfigDescription& config,
                                      const ApiVersion sdk_version_to_generate);
 
-// Finds the next largest ApiVersion of `config` for values defined for `entry`.
+// Finds the next largest ApiVersion of the config which is identical to the given config except
+// for sdkVersion.
 ApiVersion FindNextApiVersionForConfig(const ResourceEntry* entry, const ConfigDescription& config);
 
-// Finds the next largest ApiVersion of the config pointed to by the iterator `start`.
-ApiVersion FindNextApiVersionForConfigInSortedVector(
-    std::vector<std::unique_ptr<ResourceConfigValue>>::const_iterator start,
-    std::vector<std::unique_ptr<ResourceConfigValue>>::const_iterator end);
-
 class AutoVersioner : public IResourceTableConsumer {
  public:
   AutoVersioner() = default;