Revert 166547 - Use tcmalloc's debugallocation for Debug builds

to catch memory problems early, easily, and cleanly.

Because of gyp limitations, this can't be now controlled
by a flag.

BUG=30715
TEST=none

Review URL: https://codereview.chromium.org/11266019

TBR=phajdan.jr@chromium.org
Review URL: https://codereview.chromium.org/11366141

git-svn-id: http://src.chromium.org/svn/trunk/src/build@166566 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

common.gypi

@@ -805,6 +805,9 @@
     # Enable TCMalloc.
     'linux_use_tcmalloc%': 1,
 
+    # Disable TCMalloc's debugallocation.
+    'linux_use_debugallocation%': 0,
+
     # Disable TCMalloc's heapchecker.
     'linux_use_heapchecker%': 0,