[tools] Make gm.py work without GOMA again.

Change-Id: I2d8f4defd465b2f9838ed002add088da5b6739ef
Reviewed-on: https://chromium-review.googlesource.com/528197Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45815}

tools/dev/gm.py

@@ -109,7 +109,7 @@ v8_enable_backtrace = true
 v8_enable_disassembler = true
 v8_enable_object_print = true
 v8_enable_verify_heap = true
-""".replace("{GOMA}", USE_GOMA).replace("{GOMA_DIR}", GOMADIR)
+""".replace("{GOMA}", USE_GOMA).replace("{GOMA_DIR}", str(GOMADIR))
 
 DEBUG_ARGS_TEMPLATE = """\
 is_component_build = true
@@ -121,7 +121,7 @@ goma_dir = \"{GOMA_DIR}\"
 v8_enable_backtrace = true
 v8_enable_slow_dchecks = true
 v8_optimized_debug = false
-""".replace("{GOMA}", USE_GOMA).replace("{GOMA_DIR}", GOMADIR)
+""".replace("{GOMA}", USE_GOMA).replace("{GOMA_DIR}", str(GOMADIR))
 
 OPTDEBUG_ARGS_TEMPLATE = """\
 is_component_build = true
@@ -133,7 +133,7 @@ goma_dir = \"{GOMA_DIR}\"
 v8_enable_backtrace = true
 v8_enable_verify_heap = true
 v8_optimized_debug = true
-""".replace("{GOMA}", USE_GOMA).replace("{GOMA_DIR}", GOMADIR)
+""".replace("{GOMA}", USE_GOMA).replace("{GOMA_DIR}", str(GOMADIR))
 
 ARGS_TEMPLATES = {
   "release": RELEASE_ARGS_TEMPLATE,