Add support for Mac/iOS application bundles to GN tool.

tools/gn/target.h

Index: tools/gn/target.h
diff --git a/tools/gn/target.h b/tools/gn/target.h
index 18e5fb816dd38470de6df31e409ef312f850b153..389327d7559b7a805c6b5048bd543173ff2ff33d 100644
--- a/tools/gn/target.h
+++ b/tools/gn/target.h
@@ -21,6 +21,7 @@
 #include "tools/gn/lib_file.h"
 #include "tools/gn/ordered_set.h"
 #include "tools/gn/output_file.h"
+#include "tools/gn/pattern.h"
 #include "tools/gn/source_file.h"
 #include "tools/gn/toolchain.h"
 #include "tools/gn/unique_vector.h"
@@ -42,6 +43,7 @@ class Target : public Item {
     STATIC_LIBRARY,
     SOURCE_SET,
     COPY_FILES,
+    COPY_BUNDLE_DATA,
     ACTION,
     ACTION_FOREACH,
   };
@@ -135,6 +137,17 @@ class Target : public Item {
   const std::vector<std::string>& data() const { return data_; }
   std::vector<std::string>& data() { return data_; }
 
+  // Runtime file dependency for bundled application (Mac/iOS). Those files
+  // are collected recursively (breaking at executable, shared library and
+  // loadable modules).
+  const std::set<SourceFile>& bundle_data() const { return bundle_data_; }
+  std::set<SourceFile>& bundle_data() { return bundle_data_; }
+
+  // Filter for copy_bundle_data target. All files matching this pattern
+  // will be excluded from the copy.
+  const PatternList& bundle_data_filter() const { return bundle_data_filter_; }
+  PatternList& bundle_data_filter() { return bundle_data_filter_; }
+
   // Returns true if targets depending on this one should have an order
   // dependency.
   bool hard_dep() const {
@@ -280,6 +293,7 @@ class Target : public Item {
   void PullDependentTargetLibsFrom(const Target* dep, bool is_public);
   void PullDependentTargetLibs();
   void PullRecursiveHardDeps();
+  void PullRecursiveBundleData();
 
   // Fills the link and dependency output files when a target is resolved.
   void FillOutputFiles();
@@ -307,7 +321,9 @@ class Target : public Item {
   bool complete_static_lib_;
   bool testonly_;
   FileList inputs_;
+  std::set<SourceFile> bundle_data_;
   std::vector<std::string> data_;
+  PatternList bundle_data_filter_;
 
   LabelTargetVector private_deps_;
   LabelTargetVector public_deps_;