Merge bleeding edge up to 8774 into the GC branch.

src/platform-cygwin.cc

Index: src/platform-cygwin.cc
===================================================================
--- src/platform-cygwin.cc	(revision 8778)
+++ src/platform-cygwin.cc	(working copy)
@@ -166,23 +166,6 @@
 }
 
 
-#ifdef ENABLE_HEAP_PROTECTION
-
-void OS::Protect(void* address, size_t size) {
-  // TODO(1240712): mprotect has a return value which is ignored here.
-  mprotect(address, size, PROT_READ);
-}
-
-
-void OS::Unprotect(void* address, size_t size, bool is_executable) {
-  // TODO(1240712): mprotect has a return value which is ignored here.
-  int prot = PROT_READ | PROT_WRITE | (is_executable ? PROT_EXEC : 0);
-  mprotect(address, size, prot);
-}
-
-#endif
-
-
 void OS::Sleep(int milliseconds) {
   unsigned int ms = static_cast<unsigned int>(milliseconds);
   usleep(1000 * ms);
@@ -249,7 +232,6 @@
 
 
 void OS::LogSharedLibraryAddresses() {
-#ifdef ENABLE_LOGGING_AND_PROFILING
   // This function assumes that the layout of the file is as follows:
   // hex_start_addr-hex_end_addr rwxp <unused data> [binary_file_name]
   // If we encounter an unexpected situation we abort scanning further entries.
@@ -306,7 +288,6 @@
   }
   free(lib_name);
   fclose(fp);
-#endif
 }
 
 
@@ -591,8 +572,6 @@
 }
 
 
-#ifdef ENABLE_LOGGING_AND_PROFILING
-
 // ----------------------------------------------------------------------------
 // Cygwin profiler support.
 //
@@ -769,7 +748,5 @@
   SetActive(false);
 }
 
-#endif  // ENABLE_LOGGING_AND_PROFILING
 
 } }  // namespace v8::internal
-