Revert "Pull from svn bleeding_edge@3716"

This reverts commit 888f6729be6a6f6fbe246cb5a9f122e2dbe455b7.

(Waiting until v8 issue 554101 is in v8 rather than patching it straight into
android)
diff --git a/src/arm/regexp-macro-assembler-arm.h b/src/arm/regexp-macro-assembler-arm.h
index 7de5f93..4459859 100644
--- a/src/arm/regexp-macro-assembler-arm.h
+++ b/src/arm/regexp-macro-assembler-arm.h
@@ -123,7 +123,8 @@
   static const int kReturnAddress = kStoredRegisters + 8 * kPointerSize;
   // Stack parameters placed by caller.
   static const int kRegisterOutput = kReturnAddress + kPointerSize;
-  static const int kStackHighEnd = kRegisterOutput + kPointerSize;
+  static const int kAtStart = kRegisterOutput + kPointerSize;
+  static const int kStackHighEnd = kAtStart + kPointerSize;
   static const int kDirectCall = kStackHighEnd + kPointerSize;
 
   // Below the frame pointer.
@@ -135,9 +136,8 @@
   // When adding local variables remember to push space for them in
   // the frame in GetCode.
   static const int kInputStartMinusOne = kInputString - kPointerSize;
-  static const int kAtStart = kInputStartMinusOne - kPointerSize;
   // First register address. Following registers are below it on the stack.
-  static const int kRegisterZero = kAtStart - kPointerSize;
+  static const int kRegisterZero = kInputStartMinusOne - kPointerSize;
 
   // Initial size of code buffer.
   static const size_t kRegExpCodeSize = 1024;