Revert 8122 (stub call asserts) while test failures are investigated.

src/arm/regexp-macro-assembler-arm.cc

Index: src/arm/regexp-macro-assembler-arm.cc
===================================================================
--- src/arm/regexp-macro-assembler-arm.cc	(revision 8124)
+++ src/arm/regexp-macro-assembler-arm.cc	(working copy)
@@ -371,12 +371,9 @@
     // Isolate.
     __ mov(r3, Operand(ExternalReference::isolate_address()));
 
-    {
-      AllowExternalCallThatCantCauseGC scope(masm_);
-      ExternalReference function =
-          ExternalReference::re_case_insensitive_compare_uc16(masm_->isolate());
-      __ CallCFunction(function, argument_count);
-    }
+    ExternalReference function =
+        ExternalReference::re_case_insensitive_compare_uc16(masm_->isolate());
+    __ CallCFunction(function, argument_count);
 
     // Check if function returned non-zero for success or zero for failure.
     __ cmp(r0, Operand(0, RelocInfo::NONE));
@@ -614,12 +611,6 @@
 
   // Entry code:
   __ bind(&entry_label_);
-
-  // Tell the system that we have a stack frame.  Because the type is MANUAL, no
-  // is generated.
-  FrameScope scope(masm_, StackFrame::MANUAL);
-
-  // Actually emit code to start a new stack frame.
   // Push arguments
   // Save callee-save registers.
   // Start new stack frame.