Disable frame pointers

tools/gyp/configurations_make.gypi

Index: tools/gyp/configurations_make.gypi
diff --git a/tools/gyp/configurations_make.gypi b/tools/gyp/configurations_make.gypi
index 6ff4c5b8e0a4114b22eb8419c74530b284d25129..2b2943c8b57bb3b3dfaf2af1322a11dcbef145a4 100644
--- a/tools/gyp/configurations_make.gypi
+++ b/tools/gyp/configurations_make.gypi
@@ -137,8 +137,9 @@
         'abstract': 1,
         'cflags': [
           '-O<(dart_debug_optimization_level)',
-          # The sampling profiler uses the frame pointer to walk the stack.
-          '-fno-omit-frame-pointer',
+          # Uncomment the following line and pass --profile-vm to enable
+          # profiling of C++ code within Observatory.
+          # '-fno-omit-frame-pointer',
           # Clang on Linux will still omit frame pointers from leaf functions
           # unless told otherwise:
           # '-mno-omit-leaf-frame-pointer',
@@ -149,8 +150,9 @@
         'abstract': 1,
         'cflags': [
           '-O3',
-          # The sampling profiler uses the frame pointer to walk the stack.
-          '-fno-omit-frame-pointer',
+          # Uncomment the following line and pass --profile-vm to enable
+          # profiling of C++ code within Observatory.
+          # '-fno-omit-frame-pointer',
           # Clang on Linux will still omit frame pointers from leaf functions
           # unless told otherwise:
           # '-mno-omit-leaf-frame-pointer',